Get y by itself:
4x-3y>equal to -9
-4x. -4x
-3y>equal to -4x-9
Divide by -3
y>equal to 4/3x+3
To graph, go to y=3 and plot (0,3). Then do slope. Up 4 and 3 right. Go down 4 and 3 left to get the other side of the inequality. This line will be solid. You shade upwards by the way.