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Mathematics 12 Online
OpenStudy (anonymous):

find the points of intercection by substitution: 1.) x-y=3 3y=12 2.)x=y-x 3x+2y=3 3.) y=2x-3 y=x-2

OpenStudy (anonymous):

http://www.wolframalpha.com/input/?i=x-y%3D3%2C+3y%3D12 Change for the others.

OpenStudy (anonymous):

d

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