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SAT® Subject Test in Math 1 & 2

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Moderate

System with Domain Restriction

SATSTM-CVYLOB

If $-2x-4y+7=0$ and $2y-{x}^{2}=0$ for $x < 0$, then $x=$ ?

A

$-1$

B

$-1.4$

C

$-2.4$

D

$-3$

E

$-3.7$