Question

If the three points (3,_1) (a,3)and (1,-3) are collinear find ,the value of a​

Answer 1

Step-by-step explanation:

M= y2-y1/x2-x1

3+1/a-1 = -3-3/1-a

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

4-4a= -6a + 18

4 - 18 = -6a + 4a

- 14 = - 2a

now Cancel mines on both sides

a= 14/2

after cancellation

the answer is

7

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