# How do you graph 3x-y<0?

May 10, 2015

Subtract 3x from both sides.

$3 x - 3 x - y < 0 - 3 x$ =

$- y < - 3 x$

Multiply times $- 1$.

$y > 3 x$

Determine two points on the line, temporarily changing the $>$ symbol to an $=$ symbol.

If x=0; y=3(0)=0
Point = $\left(0 , 0\right)$

If x=2; y=3*2=6
Point = $\left(2 , 6\right)$

Plot the points on a graph and draw a dashed line (-----) through the points to indicate that the points on that line are not part of the inequality. Shade in the area above the line.

graph{y>3x [-14.24, 14.23, -7.12, 7.12]}