Otherwise , print the equation of the normal
if ( slope != - 1 && slope != - 2 ) { x1 *= - slope ; x1 += y1 ; if ( x1 > 0 ) System . out . print ( " y ▁ = ▁ " + slope + " x ▁ + ▁ " + x1 ) ; else System . out . print ( " y ▁ = ▁ " + slope + " x ▁ " + x1 ) ; } }