Question

find the value of p for which.( - 5,1)(1,p) and (4 - 2) are collinear

Answer 1

use distance formula to find the p
AB=BC=AC

Answer 2

Step-by-step explanation:

i have taken (-5,1) as coordinate of A

(1,p) as coordinate of B &

(4,-2) as coordinate of C

since these points are collinear therefore the area of the triangle formed by these points will be zero.

now using the area of triangle through vertices and putting the values we find the answer.

I have written the formula.