Question

solve this pls que 7​

Answer 1

Given x,y belongs to Z.

Now given equation is,

R : y = 2x - 4

Now points (a,-2) and (4, b^2) belongs to R.
So they must satisfy the R.

Substituting first point in R.

y = 2x - 4
-2 = 2a - 4
2 = 2a
a = 1..........(value of a)

Substituting second point in R.

y = 2x - 4
b^2 = 2(4) - 4
b^2 = 8 - 4
b^2 = 4
b = 2........(value of b)
b = -2.......(value of b)