Question

How do you graph `x-2y>= 4`?

Answer 1

`x-2y>=4`

Solve for y.

Subtract x from both sides.

`-2y>=-x-4`

Multiply both sides by -2.

`y<=x/2+2`

Determine two points on the line.

If `x=0, y=0/2+2=0+2=2` Point=`(0,2)`
If `x=4, y=4/2+2=2+2=4` Point=`(4,4)`

Plot the points and draw a straight line through the points. Then shade in the area below the line.
graph{y<=x/2+2 [-10, 10, -5, 5]}