Persamaan garis melalui titik (-3,5) dan tegak lurus dengan garis y-8x=16

y - 8x = 16
a = -8
b = 1

m = -a/b = -(-8)/1 = 8

tegak lurus
m1.m2 = -1
8m2 = -1
m2 = -1/8

(y - 5) = -1/8(x - (-3))
y - 5 = -1/8(x + 3)
8(y - 5) = -x - 3
8y - 40 = -x - 3
x + 8y = -3 + 40
x + 8y = 37