Question

If the three points (3,-1),(a,3),(1,-3) are collinear , find the value of a

Answer 1

Refer to the attachment for your solution...

Answer 2

Answer:

a=7

Step-by-step explanation:

Find the slope of AB and BC,

you get 4/a-3 and -6/1-a respectively.

equate on both sides,

4/a-3 = -6/1-a

by cross multiplication you get,

4-4a=-6+18

2a=14

a=14/2

a=7

Therefore,answer =7

Hope this answer helps you.