Question 674956
x+y<3
as slope intercept form is 
x - x + y < 3 - x
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{{{highlight_green(y < -x + 3)}}}
slope is -1
{{{graph(200,100,-10,10,-10,10,y<-x+3)}}}
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x-y > 4 or is that x-y > -4 ?
x-y > 4  is x - y + y - 4 > 4 - 4 + y
{{{highlight_green(y < x-4)}}} 
{{{graph(200,100,-10,10,-10,10,y<x-4)}}}
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if it is x-y > -4, then
x - y + y +4 > -4 + 4 + y
{{{highlight_green(y < x + 4)}}}
...
{{{graph(300,200,-10,10,-10,10,y<x+4)}}}
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Either way on this last one, slope is 1
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