Question

If the points (7,-2),(5,1) and (3,k) are collinear, then find the value of k

Answer 1

K =4. if the points are collinear then area Of triangle =0

Answer 2

Answer:

Step-by-step explanation:

1/2 |x1(y2-y3)+x2(y3-y1)+x3(y1-y2)| = 0

1/2|7(1-k)+5(k+2)+3(-2-1)| = 0

7-7k+5k+10-9=0

8-2k=0

K= -8/-2

K=4