Answer:
a.) 1
Explanation:
y = x2 -------- eqn(1)
2y +6 = 2(x +3) ------- eqn(2)
substitute eqn(1) into eqn(2)
2(x2) + 6 = 2x + 6
2x2 - 2x + 6 - 6 = 0
2x2 - 2x = 0
divide through by 2
x2 - x = 0
x2 = x
x = 1
Substitute x = 1 into eqn(1)
y = (1)2
y = 1
xy = 1 x 1
= 1
Ans A
