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|Alysha|
Use substitution to solve the system of equations. 2x+y=-7 -5x+2y=22 A. (–36, 65) B. (–4, 1) C. (8, –23) D. (36, –79)
if you really dont know how to do this, you can always do it the long way by plugging in x and y from each answer and seeing if it works
http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/v/substitution-method-2