Which system is equivalent to y=-2x^2 ; y=x-2?

a) y=-2y^2-2; x=y-2

b) y=-2y^2+2; x=y+2

c) y=-2y^2-8y-8; x=y+2

d) y=-2y^2-8y-8; x=y-2

With this question! what is process of elimination? ? p. s. my brothers acc got banned so add his new one @ yamauchiyamyam17

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