Answer:
The solutions for the system of equation.
when x = 2 than y = -4
when x = -4 than y = 8
Step-by-step explanation:
As given the system of equation
y = -2x
y = x²-8
Put y = -2x in the equation y = x²-8 .
-2x = x²-8
x² + 2x - 8 = 0
x² + 4x - 2x - 8 = 0
x (x + 4) -2 (x + 4) = 0
(x + 4)(x - 2) = 0
x = 2 , -4
Put x = 2 in the equation y = -2x
y = -2 × 2
y = -4
Put x = -4 in the equation y = -2x
y = -2 × -4
y = 8
Therefore when x = 2 than y = -4 and when x = -4 than y = 8 .
