Question

If points (1, 2), (- 5, 6) and (a, - 2) are collinear, then a =

Answer 1

Answer:

Take (1,2) and (-5,6)

Slope1=(6-2)/(-5-1)=(-4/6)

Now take (1,2) & (a, - 2)

Slope2=(-2-2)/(a-1)=(-4)/(a-1)

Now slope1=slpoe2

So a=7

Answer 2

Answer:

the required answer is7

Step-by-step explanation: