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

M1 =-a/b = -7/4/2 = -7/8

M1.M2= -1
-7/8m2 = -1
m2 = 8/7

Y-y1 = m(x-x1)
Y+3 = 8/7(x+2)
y+3 = 8/7x + 16/7