Question 263131
4x-y<3 
step 1 - subtract 4x to get
-y<-4x+3
step 2 - divide by -1 ; don't for get the negative rule about switching the inequality when multiply or divide by - number. We get
y >4x - 3
here is the graph
{{{ graph( 300, 200, -6, 5, -10, 10, y >4x - 3) }}}
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and 3x+4y<12
step 1 - subtract 3x to get
4y<-3x + 12
step 2 - divide by 4 to get
 y < (-3/4)x + 3
here is the graph
{{{ graph( 300, 200, -6, 5, -10, 10, y < (-3/4)x + 3) }}}