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OpenStudy (anonymous):
Solve the following system of equations: −2x + y = 1 −4x + y = −1
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OpenStudy (anonymous):
By substitution or elimination. EQ#1 times -1 2x - y = -1 Add this vertically to EQ#2 -4x + y = -1 ---------------- -2x = -2 x = 1 Now plug this into either original equation to find y. -2(1) + y = 1 -2 + y = 1 y = 3 Solution (1,3)
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