Melalui titik (2,-3) dan tegak lurus garis y=2/3x-1

jawab

y = 2/3 x - 1
m1 = 2/3
m2 = - 3/2  krena tegak lurus

(2,-3), m = -3/2

y - y1 = m (x - x1)
y + 3 = -3/2 (x - 2)
2(y +3)=  - 3( x- 2)
2y + 6 = - 3x + 6
2y = - 3x
y = - 3/2 x