Question

three points have coordinates A (-1,2),B (3,10) and C (p,8).find the value (s) of p if A,B and are collinear . please solve kindly
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Answer 1

if 3 points are collinear

| X1 Y1 1 |

| X2 Y2 1 | =0

| X3 Y3 1 |

X1=-1

X2=3

X3=p

Y1=2

Y2=10

Y3=8

it can be easily found