titik potong garis x + 4y=2 dan 2x +3y=-6 adalah...

a. (-6,2)
*caranya*

x + 4y = 2 |×2|
2x + 3y = -6 |×1|

2x + 8y = 4
2x + 3y = -6

*dikurang*

5y = 10
y = 2

*mencari x*

x + 4y = 2
x + 4(2) = 2
x + 8 = 2
x = -6

(x,y) = (-6,2)