a student wants to record the data of the growth of a vine over a period of a day & days are a kind of unit for measuring time ->  the student wants to record the data of the growth of a vine over a period of time  the student wants to record the data of the growth of a vine over a period of time & a line graph is used for showing change / data over time -> a line graph an be used to show the data of the growth of the vine over a period of time