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OpenStudy (anonymous):
4x + y = 6 3x + 7y = 17 A. (-1, 10) B. (1, 2) C. (8, -1) D. (3, -6)
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OpenStudy (welshfella):
multiply the first equation by -7 and add
OpenStudy (welshfella):
this way you'll eliminate y and get an equation in x only
OpenStudy (anonymous):
or you could plug in each coordinate and see which works and which doesn't work, but that takes a long time and is ineffiecent
OpenStudy (anonymous):
im confused.
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