Question 328106
{{{2x + y = -3}}} 
{{{y=-2x-3}}}
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{{{drawing(300,300,-4,8,-10,2,grid(1),graph(300,300,-4,8,-10,2, -2x-3))}}}
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{{{3x + 4y = -27}}}
{{{4y=-3x=27}}}
{{{y= -(3/4)x-27/4}}}
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{{{drawing(300,300,-4,8,-10,2,grid(1),circle(3,-9,.3),graph(300,300,-4,8,-10,2, -2x-3,-(3/4)x-27/4 ))}}}
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Looks like (3,-9) is a solution.
Verify using the equations.
{{{3x+4y=-27}}}
{{{3(3)+4(-9)=-27}}}
{{{9-36=-27}}}
{{{-27=-27}}}
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{{{2x + y = -3}}} 
{{{2(3) + -9 = -3}}}
{{{6-9=-3}}}
{{{-3=-3}}}
True for both. 
Solution verified.
One solution means consistent and independent system.