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Math·Algebra·Systems of two linear equations in two variables

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The system of two linear equations is graphed in the xy-plane shown. Which of the following systems of equations is represented by the graph?

A

$y=9x+2$ ; $y=-\frac{x}{6}-2$

B

$y=2x+9$ ; $y=-2x-9$

C

$y=\frac{x}{2}+9$ ; $y=\frac{x}{2}-9$

D

$y=9x+2$ ; $y=9x-2$