Question 136893
help me solve please:
y+3x=9 
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You can't really "solve" it.  You can graph
it, or you can solve for one of the variables,
but, with two variables, you would need another
equation with the same variables to "solve"
the system.
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y = -3x+9
{{{graph(400,300,-10,10,-10,10,-3x+9)}}}
Cheers,
Stan H.