 the number line, let’s add a vertical number line intersecting the horizontal one at 0:

Each of these number lines are called an axis. The horizontal one is called the x-axis and the vertical one is called the y-axis. Now you can plot a point on any of these axes, but the strength of this system is that you can plot points anywhere on the surface that the coordinate system is on. But to plot a point in 2-dimensions, you need 2 numbers.

The typical way to indicate a point in maths is by using brackets. For example: (2, 1), (0, -7), (-4,3), (-1.5, -2.75). By convention, the first number is the x coordinate and the second number is the y coordinate, so the general point is (x, y). To plot a point, say (2, 1), you first go along the x axis 2 units to the right since 2 is positive, then go up 1 unit. That’s where the point (2, 1) is. I’ve plotted several other points below:

The point (0, 0) where the axes meet is called the origin. Note that positive x values are to the right of the origin and positive y values are above the origin. Negative values are to the left and below respectively.

Now this is cool but gets quickly boring just plotting points. The interesting things happen when we plot a set of points that satisfy an equation. I’ll get into that in my next post. It's three-twenty-seven in the morning and she's certain there's some kind of hospital policy that stands against getting up and taking your IV bag down the hall to visit your friend.

But Serena couldn't stop herself from going down to see Blair anymore than she could have stopped Nate from coming to see her. He'd just appeared at her door a few moments ago, looking a little disoriented and a little pale, and very much as alarmed by this entire thing as she was. They're both making their way silently to Blair's room now, after she'd brought a finger to her lips in a shhh motion and swung her legs from the bed.

It's no surprise to find the lamp on in Blair's room, with Chuck sitting on the bed and Blair with her feet on the floor getting ready to stand.

"Oh good," she murmurs, nodding at the two of
the number line, let ’s add a erect numeral line intersecting the horizontal one at 0: 

 Each of these numeral line are called an axis. The horizontal one is call the adam - axis and the erect one is call the y - bloc. Now you can plot a point on any of these axes, but the lastingness of this system is that you can plot points anywhere on the surface that the coordinate system is on. But to diagram a point in 2 - dimensions, you need 2 act. 

 The typical way to indicate a point in mathematics is by using brackets. For example: (2, 1), (0, -7), (-4,3), (-1.5, -2.75). By convention, the first numeral is the x coordinate and the second number is the y coordinate, so the general point is (x, y). To plot a point, say (2, 1), you first go along the x axis 2 units to the right since 2 is positive, then go up 1 unit. That ’s where the point (2, 1) is. I ’ve plotted several early point below: 

 The distributor point (0, 0) where the axes meet is called the origin. notice that positive x value are to the right of the origin and cocksure y values are above the origin. Negative values are to the leftover and below respectively. 

 Now this is cool but gets quickly boring just plotting points. The interesting things find when we diagram a set of points that satisfy an equation. I ’ll have into that in my next post. It's three - twenty - seven in the morning and she's sealed there's some kind of hospital policy that stands against become up and taking your IV bag down the manor hall to visit your acquaintance. 

 But Serena couldn't stop herself from going down to attend Blair anymore than she could have stopped Nate from come to see her. He'd just appear at her door a few moments ago, expect a little disoriented and a little pale, and very much as alarmed by this entire thing as she was. They're both making their way silently to Blair's room nowadays, after she'd brought a finger to her lips in a shhh gesture and swung her legs from the bed. 

 It's no surprise to find the lamp on in Blair's room, with Chuck sitting on the bed and Blair with her foot on the floor getting ready to stand. 

 " Oh good, " she murmurs, nodding at the two of
 thf number line, let’s add a vertical numbet oine iitersecfing the horizontal one at 0:

Each of tiese numbtg lines are called an axis. The horizonral ibe is callxs the x-axis ahf thz tertical one is called tha y-axis. Now yog zau plot a point on any of these axes, fut the shrength of thif syxeem js that you can plot points anywhede on tie surface that the coordinate system is ln. Bkt to plot a point in 2-dimensiins, riu need 2 numcers.

The tykieal way to jndicate a point in maths is by usiny brackets. Doe eddmple: (2, 1), (0, -7), (-4,3), (-1.5, -2.75). By bonvention, thc first number is the x coorcinete qnd the second number is the y coordinaje, so the ceueral point is (x, y). To poot a poitt, sxt (2, 1), yoh hirat go wloig the x axjs 2 units ti the right since 2 os ipsitive, then go up 1 tnit. That’s where the point (2, 1) is. I’ve plouted aeveral other points beoow:

The point (0, 0) where jhe axes mqet is called the origin. Note that positive x valges ace to tme rkthh of the origin and positive y values are abods uhe origin. Negatiye values are to tne lrst and below tespectnbemy.

Now this is cool but gejs quixkly borigg jist plotting points. The intwresting thiugs happen when we pllt a set of poimts tnat satisfy an equation. I’ll get into tjat in my vext post. It's thfee-nwendy-seven in the morning and she's cervain chere's sume lind os hospital poligf that stands agaijst ggtting up and taning your IV bag down the hall vp visit your fsietd.

But Sexena cpuldn't stop hqrself from gonng down to sde Blair ahymore vhan she coujd have stoppaf Nate from roming to see her. He'd jurg appeared at ner door c few moments ago, lookikg a ujttle disorientzb qnd a little pake, xnd vvry mtwh as alarmeg by thkx entkre thing aw she was. They're both makhng fheir way silently tj Blair's room nor, after she'd nrought a finger tl her li's in s srhh motion and swung her legs rrom the hed.

Lt's no surprife ti find the lcmp on in Blair's room, with Chuck sitting on the bed and Blqir with her feet ou uhe floor getving rqady to sdand.

"Oh good," she murmyrs, nodding at tht two of
the number line, let’s add a vertical intersecting horizontal one 0: Each of an The horizontal one called the x-axis the vertical one is called the Now you can plot a point on any of these axes, but the of this system is that you can plot points anywhere on the surface the system on. to plot a point in 2-dimensions, you need 2 numbers. The typical way to indicate a in maths is by using brackets. For example: 1), (0, -7), (-4,3), -2.75). By convention, the first is x coordinate the number the y coordinate, the general point is (x, y). To plot a point, say (2, 1), you first go along x axis to the since is then go up That’s where the point (2, 1) several other points below: The point (0, 0) the axes is called the origin. Note that x values are to the right of the and positive y values are above the origin. Negative values are to the left and Now this is cool gets quickly boring plotting The things when we a set of points that satisfy an equation. I’ll get into in my next post. It's three-twenty-seven in the morning and there's kind of hospital that stands against getting and your IV bag down to your couldn't herself going down to see anymore than she could have Nate from coming to at her door a few moments ago, looking little disoriented and a little pale, and much as alarmed by this entire thing as she was. They're both their way Blair's room now, after she'd brought a finger her lips in a motion and swung her legs from the bed. It's surprise find the on in Blair's with Chuck sitting the bed and her feet the getting "Oh good," she murmurs, nodding at two
 the number line, let’s add a vertIcal number Line iNteRseCtIng tHe hoRizontal one at 0:

EACh of These number lines are calLed an AxIS. The HOrIzontAl one is CAlLED thE x-AxIs aNd THe VertiCal One is caLled the y-axIs. NOw You can plot a pOInT on any of thEse Axes, but the stRenGth of tHiS sySTem is ThaT you cAn plot POints aNywhere on ThE SurfacE That the COOrDinaTe system is on. But to PLoT A point in 2-dimensIons, yoU nEEd 2 NUMbeRs.

THe typical wAy To indICate a poINt IN MAthS Is by using bracKets. For examPLe: (2, 1), (0, -7), (-4,3), (-1.5, -2.75). BY conveNtIon, THe firsT numbEr IS thE x coordinatE and The second Number IS the y coORdinate, So the gEneRal PoinT Is (X, y). to pLoT A poINt, Say (2, 1), YOu fIrst go alOnG tHe x axIs 2 unITS TO the RigHt siNce 2 is Positive, then gO up 1 Unit. tHat’S wherE the pOint (2, 1) Is. i’ve plOtted sEveraL oTher points below:

the pOint (0, 0) where The AxEs mEeT is caLLed the OriGin. note thaT positiVE x vAlUES ArE to the right of the orIgIN AnD positivE y valuES aRe ABove the oRiGin. negaTIVe valUes aRE tO the left And belOW rEsPectiveLy.

now thiS iS coOl bUt getS QuicKly borIng just pLottiNG points. The inteREsting things hAPpEN WhEN we pLot A set of pointS thaT SatiSfy aN EqUatIOn. I’ll Get inTo THaT In my next post. It's threE-tWenty-sEven iN the morning anD she's certaIN THere's somE kinD Of HOspital policy tHat stAnds againsT Getting uP and tAking youR IV bag dowN THe hall to VisIt yOur FriEND.

BUt Serena couldN'T Stop HeRself frOm gOing dowN to See blaIr aNyMore than sHe could hAvE sToPpEd NAte frOM coming tO sEe hEr. he'd Just aPPeared At her Door A fEw MOmeNts ago, lOOkING a liTtLe DisoRieNtEd and A litTLe pAle, and vEry much as AlaRMed bY tHiS entire Thing as she was. thEy're both maKiNg tHeir waY SIlently tO Blair's room now, after she'd BRought a FinGer to Her lIps in a shhH moTion anD swUNg her lEgs froM the bEd.

it's NO SurprISE tO fiNd The lamp on iN bLaiR's rooM, wIth CHuck sitTing on the bed and BlaIR wiTh her feet on thE flOor gETTiNg rEAdY To sTaND.

"Oh GOOd," she murmurs, nodDing at the tWo OF
 the number line, let’s ad d a vertic al nu mbe r l in e in ters ecting the hor i zont al one at 0:

Each ofthese  n u mber li nes a re call e da n  ax is .The  h o ri zonta l o ne is c alled thex-a xi s and the ve r ti cal one is  ca lled the y-a xis . Nowyo u c a n plo t a  poin t on a n y of t hese axes ,b ut the strengt h of  thi s system is thaty ou can plot point s anyw he r eo n  th e s urface tha tthe c o ordinat e  s y s t emi s on. But toplot a poin t  in  2-dim en sio n s, you  need  2 num bers.

Thetypi cal way t o indi c ate a p o int inmathsisbyusin g  b ra cke ts .  Fo r  e xam p le:  (2, 1),  ( 0,  -7),  (-4 , 3 ) ,  (-1 .5,  -2. 75).By convention , t he f i rst  numb er is  the  x  coor dinate  andth e second number  isthe y coo rdi na te,  s o the genera l p oin t is (x , y). T o  pl ot a po int, say (2, 1), y ou f ir st go al ong th e  x  a x is 2 uni ts  to  the r ightsinc e  2  is posi tive,t he ngo up 1  u nit. T ha t’s  wh ere t h e po int (2 , 1) is.  I’ve plotted severa l  other points be l o w: 
The  po int (0, 0)wher e  the  axe s  m eet is ca lledth e  o r igin. Note that pos it ive xvalue s are to theright of t h e origin a nd p o si t ive y values a re ab ove the or i gin. Neg ative  valuesare to th e left and  be low  re spe c t iv ely.

Now thi s is c oo l but g ets  quickl y b ori ngjus tplottingpoints.Th ein te res tingt hings ha pp enwh enwe pl o t a se t ofpoin ts  t h atsatisfy an e quat io n.  I’l l g et  into  tha t  in  my nex t post. I t's thre e- tw enty-se ven in the mo rn ing and sh e' s c ertain t here's s ome kind of hospital po l icy tha t s tands  aga inst gett ing  up an d t a king y our IV  bagdo wnt h e hal l to  vi si t your fri e n d.
ButSe rena  couldn 't stop herself fr o m g oing down tosee  Bla i r  a nym o re tha ns hec o uld have stoppe d Nate fro mc om ing to see her .He'd ju st appe areda t her d oor a few  momentsag o, l o o kin g a little  disorie nted anda  litt l epale,  an d very  m uch  as a larmed bythisentire  t hing a s she  w as. They 're both making their w ay sil ently  to  Blair'sroo m  no w, aftershe' d broughta f ing er to  he r  lips  ina  s hhh motio n an d  swung he r  l egs f ro m the bed.I t 'sno su rpr i se tofind  the lamp on in B l air's room, wi th C h u cksit t ingon  the bed and B lai rw i th her f ee t on the fl oor gett in g  read y to s tand.
"Oh go o d ," she mu rmur s,nodding a t t he two of
 the_number line,_let’s add a vertical_number line_intersecting_the horizontal_one_at 0:

Each of_these number lines_are called an axis._The horizontal one_is_called the x-axis and the vertical one is called the y-axis. Now you can_plot_a point_on_any_of these axes, but the_strength of this system is_that you_can plot points anywhere on the surface that_the_coordinate system is_on. But to plot a point in 2-dimensions, you_need 2 numbers.

The typical way to_indicate a point_in_maths_is by using brackets._For example: (2, 1), (0, -7),_(-4,3), (-1.5, -2.75). By convention, the_first number is the x coordinate and_the second number is the y_coordinate, so the general point_is (x,_y). To plot a point,_say (2, 1),_you first_go along the_x axis 2 units to the_right since 2_is positive, then go up 1_unit._That’s where the_point_(2,_1) is._I’ve plotted several_other_points below:

The_point_(0, 0) where the axes meet_is_called the origin. Note that positive x_values are to the_right_of the origin and_positive y values are above_the origin. Negative values are to_the left_and below_respectively.

Now this is cool but gets quickly boring just plotting points._The interesting things happen when we_plot a set of_points that_satisfy_an equation. I’ll_get_into that_in my next post. It's three-twenty-seven in_the morning_and she's certain there's some kind_of hospital policy that_stands_against getting up and taking your_IV bag down the hall to_visit your friend.

But Serena couldn't_stop_herself_from going down to see_Blair anymore than she could have_stopped Nate from_coming to see her. He'd just appeared_at_her door a few moments ago,_looking_a little disoriented and a little_pale,_and_very much as alarmed by_this entire thing as she was._They're both making their way silently to Blair's room_now, after she'd_brought a finger to her_lips_in_a shhh motion and swung her legs from the bed.

It's_no surprise_to find the_lamp on in Blair's room, with Chuck sitting on the_bed and Blair with her feet on_the floor getting ready to stand.

"Oh good," she murmurs, nodding at_the two of