Question 91919
3x + 5y < 15

rearrange it so that y is on one side by itself:


5y < 15 -3x

{{{y < 3 - (3/5)x}}}


graph  {{{y = 3 - (3/5)x}}}


{{{graph(200,200, -10,10,-10,10, 3 - (3/5)x)}}}

the region below the line is the answer, since every point in the region has a y value smaller than {{{3 - (3/5)x}}}