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OpenStudy (chacha1234):
How many solutions does this system have? x-7=-4 3x+y=8
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OpenStudy (elson):
x-7=-4 so x=3. Sub in 3 to the 3x+y=8. the solution is (3,-1) there is only one
OpenStudy (chacha1234):
How many solutions does this system have? 12x-4y=-8 y=3x+2
OpenStudy (elson):
Sub in y=3x+2. 12x-12y-8=-8. The 2 lines are the same
OpenStudy (elson):
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OpenStudy (chacha1234):
So.. no solution...?
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OpenStudy (elson):
Everything is a solution. If a point is on one of the lines, it is on the other line
OpenStudy (elson):
infinity
OpenStudy (chacha1234):
How many solutions does this system have? y=3x-5 y=-x+4
OpenStudy (elson):
got to go
OpenStudy (chacha1234):
One more please
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OpenStudy (chacha1234):
Just that one
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