tentukan gradien garis yang tegak lurus garus 5x - 7y = 15!

Persamaan Garis
ax + by + c =
gradien = m = -a/b

••
5x - 7y =15
a = 5
b = -7

m1 = -a/b = -5/-7 = 5/7

Syarat tegaklurus : m1 × m2 = -1

gradien (m2) garis yg tegaklurus 5x - 7y = 15 :
m2 = -1/m1 = -7/5 ✔