Question

If the points (-1, 1), (-7, 3) and (a,-1) lie on a straight line, find the value of a.

Answer 1

Answer:

a = 5

Step-by-step explanation:

this question has been solved using property of slopes,

m1=m2

full solution in the attachment:

hope it helps(:

Answer 2

Answer :

a = 5

Step by step explanation:

Using the slope formula, we can equate the two points to find a