Question

Garis lurus melalui (2,5) dengan tgk lurus garis 2x+y+5=0

Answer 1

2x + y + 5 = 0
a = 2
b = 1

m1 =

m1 =

m1 = -2

m2 =

m2 =

m2 =

y-y1 = m2(x-x1)
y-5 = 1/2(x-2)
y-5 = 1/2 x - 1
y = 1/2 x - 1 + 5
y = 1/2 x + 4
------------------- x 2
2y = x + 8

Answer 2

2x+y+5 = 0
(2,5) = 2.2+5+5
= 4+5+5
=14