Prephub - Solve the system of equations 5 x2 y9 quad and y7 x

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Question

Difficulty Level:

Medium

MCQ

Solve the system of equations: $-5 x+2 y=9 \quad$ and $y=7 x$

Select all that apply :

$(1,7)$

$(-1,7)$

$(1,-7)$

$(-1,+7)$

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