y-2=6(x-2)
y-2=6x-12
y=6x-12+2
y=6x-10
y+8=2(x+18)
y+8=2x+36
y=2x+36-18
y=2x+18
a. eliminasi sumbu y
6x-10=y
2x+18=y _
4x-28=0
4x=28
x=28/4 = 7
b substitusi nilai x = 7 ke persamaan 6x-10
6(7)-10=y
42-10=y
32=y
jadi nilai x =7 dan y = 32
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y-2=6(x-2)
y-2=6x-12
y=6x-12+2
y=6x-10
y+8=2(x+18)
y+8=2x+36
y=2x+36-18
y=2x+18
a. eliminasi sumbu y
6x-10=y
2x+18=y _
4x-28=0
4x=28
x=28/4 = 7
b substitusi nilai x = 7 ke persamaan 6x-10
6x-10=y
6(7)-10=y
42-10=y
32=y
jadi nilai x =7 dan y = 32