Question

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

Answer 1

2y+2=-7/4(x-7)
2y=-7/4x+49/4-2
---------------------------kalikan 4
8y=-7x+49-4
8y=-7x+45
y=-7/8x+45/8
m=-7/8

tegak lurus
m1.m2=-1
-7/8.m2=-1
m2=-1.-8/7
m2=8/7

y-y1=m(x-x1)
y+3=8/7(x+2)
y=8/7x+16/7-3
-------------------kalikan 7
7y=8x+16-21
7y=8x-5
8x-7y-5=0