If the points p(-3,9),q(a,b)and R(4,-5)are collinear and a+b=2 find the value of A and B

If the points p(-3,9),q(a,b)and R(4,-5)are collinear and a+b=2 find th

1.	If the points p(-3,9),q(a,b)and R(4,-5)are collinear and a+b=2 find the value of A and B
Answer» I\xa0guess the correct question is :Q:\xa0If the points P(-3, 9), Q(a, b) and R(4, -5) are collinear and a+b=1, find the value of a and b.\xa0