Question 1062305
The first is (6,-6). That is where the vertical x line at x=6 intersects the horizontal y line a y=-6.
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2x - 3y =9
x= -3
The first is -6-3y=9
-3y=15
y=-5  solution (-3,-5)
{{{graph(300,300,-10,10,-10,10,(2x/3)-3)}}} This intersects a vertical line where x=-3
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5x + 4y = 16
y= -16
5x-64=16 by substitution.
5x=80, x=16  solution (16,-16)
{{{graph(300,300,-20,30,-20,20,y=(-5x/4)+4,-16)}}}