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1.) Determine whether each ordered pair is a solution of the system of linear equations.
3y=9x+12
3x-y=-4
a. (-2,-2) b. (0,4)
MY ANSWER: I PUT YES

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2.) Solve the system of equations by graphing.
x-y=4
y=-1
MY ANSWER: (1,-3) (0,-4)

Lines intersect @ (1, -3)

yep that's right but why did you put 0 , -4 for 2nd question ?

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