Question 95053
7x-5y=-15
5y=7x+15
y = (7/5)x+3
Let x=0 then y=3
Let x = 5 then y=10
Plot those two points and draw a line thru them:
{{{graph(400,300,-10,10,-10,10,(7/5)x+3)}}}
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and the second
6y+5x=-6 
6y=-5x-6
y = (-5/6)x-1
Let x = 0 then y = -1
Let x = 6 then x = -6
Plot those two points and draw a line thru them:
{{{graph(400,300,-10,10,-10,10,(-5/6)x-1)}}}
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both use y=mx+b
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Cheers,
Stan H.