Question 64969
Y>X & 2X+Y<-3

{{{ graph( 300, 200, -6, 5, -10, 10, y>x, 2x+y<-3) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y>x and 2x+y<-3). 
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5x+3y>=15 & x<=y & x<=4
{{{ graph( 300, 200, -6, 5, -30, 30, 5x+3y>=15, x<=y, x<=4) }}} (graph 300x200 pixels, x from -6 to 5, y from -30 to 30, of THREE functions 5x+3y>=15, x<=y,  x<=4). 
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4x+7y, x+y>=2, 3x-4y<=6, 6y<=x+12
{{{ graph( 300, 200, -20, 20, -10, 10, 4x+7y, x+y>=2, 3x-4y<=6, x<=4) }}} (graph 300x200 pixels, x from -20 to 20, y from -10 to 10, of FOUR functions 4x+7y, x+y>=2, 3x-4y<=6, 6y<=x+12). 
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MERRY CHRISTMAS