Question

Tentukan persamaan garis yang tegak lurus 2y+2=-7/4(x-7) dan melalui titik (-2,-3)

Answer 1

2y + 2 = -7/4(x - 7)
2y = -7/4(x - 7) - 2
y = -7/2(x - 7) - 4
 m1 = -7/2
m1.m2 = -1
-7/2.m2 = -1
m2 = 2/7

y - y1 = m(x - x1)
y + 3 = 2/7(x + 2)
7(y + 3) = 2(x + 2)
7y + 21 = 2x + 4
-2y + 7y = 4 - 21
-2x + 7y = -17 atau
2x - 7y = 17

jangan lupa nilai maksimal