Question 353163
Hi,
{{{3x + 4y >= 12}}}
{{{ 4y >= -3x + 12}}}
{{{ y >= (-3/4)x + 3}}}
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Note: y = (-3/4)x + 3  represent the graph of a line with a slope of (-3/4) and y-intercept = 3.  
Pt(0,3) and for ex. Pt(4, 0)are on the line
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Graphing the >= inequality: shade the area above the line, noting the line is to be included.
{{{graph( 300, 300, -10, 10, -10, 10, (-3/4)x+3))}}}