Jawabanmu

2014-04-15T19:01:08+07:00
Y-y1/y2-y1 = X-X1/X2-X1
y-(-5)/2-(-5) = X-1/3-1
y+5/2+5 = X-1/2
y+5/7 = X-1/2
2(y+5) = 7(X-1)
2y+10 = 7X-7
7X-2y = 17

Semoga Membantu :D