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OpenStudy (anonymous):
Solve the following system of equations: -2x + y = 1 -4x + y = -1 (3, 1) (-1, 3) (-1, -3) (1, 3)
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OpenStudy (nikato):
multiply one of the equation by -1
OpenStudy (anonymous):
from equation 1) y = 1 +2x put this value in equation 2) and solve for x.
OpenStudy (anonymous):
so its A or D right?
OpenStudy (nikato):
no, it can only be one of them. the answers are written in coordinates (x,y)
OpenStudy (anonymous):
A ?
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OpenStudy (nikato):
plug that back into the equation. does that make sense?
OpenStudy (nikato):
start from sctratch|dw:1388899933211:dw|
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