Question

If ( -1,1) is mid point of line segment joining (-3,b) and (a,4) then ab = .........

Answer 1

Step-by-step explanation:

x= -3+a/2= -1

-3+a = -2

a = -2+3

a = 1

b+4/2 = 1

b+4 = 2

b = 2-4

b = -2