Question

Prove that points (-3,2), (1,-2) and (9,-10). Are collinear

Answer 1

Answer:

Step-by-step explanation: Now the points are (-3,2), (1,-2), (9,-10)

-3×2, 1×-2, 9×-10

Now, 1/2(-3×-2+1×-10+9×2) (1×2+9×-2+(-3×-10)=0

, (+6-10+18) -(2-18+30) =0

6-10+18-2+18-30=0

-12+12=0

0=0, So these point are collinear.