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Mathematics 11 Online
OpenStudy (anonymous):

How many solutions are there to the following system of equations? -2x + 2y = 8 9x - 9y = 36

OpenStudy (anonymous):

no solutions 9(-2x+2y= 8) --> -18x+18y=72 2(9x-9y=30) --> 18x-18y=60 everything cancels!!

OpenStudy (anonymous):

looking at the graph, they are parallel lines

OpenStudy (anonymous):

well in my question is has multiply choices. So, is zero or an infinitely many?

OpenStudy (anonymous):

zero solutions

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