Garis k melalui titik A(1,1)dan B(3 ,2),Q(q,3)dan R(-3,r). Nilai q dan r berturut turut adalah

jawab
mAB = MQR

m = y2-y1/x2 - x1

m AB = (2-1)/(3-1)  = 1/2
m QR = (r-3)/(-3-q)

(r-3)/(-3 -q) = (1) / (2)

r - 3 =  1 --> r = 1+ 3 = 4
-3- q = 2 --> q = -3-2 = -5

q,r = -5,  4