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OpenStudy (anonymous):
What is the solution of this linear system? 4x+y=-1, y=-2x+3
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OpenStudy (anonymous):
-4x - 1 = -2x + 3 -1 - 3 = -2x + 4x
OpenStudy (anonymous):
-4 = 2x -4/2 = 2x -2 = x.
OpenStudy (anonymous):
solve for y:
OpenStudy (anonymous):
y = -2x + 3 y = -2(-2) + 3 y = 4 + 3 y = 7.
OpenStudy (anonymous):
(-2, 7) are your coordinates. :)
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OpenStudy (raffle_snaffle):
Matrix?
OpenStudy (raffle_snaffle):
You can solve by using a matrix
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