Inequalities and graphs

Inequalities can be represented on a graph and to do that you only need to know two things:

Dotted and solid lines equal less than and greater than

Pick a point NOT on the line
If it satisfies the inequality SHADE IT
If it does not satisfy the inequality
DON'T SHADE IT
(so it must be the other side)

NOTE 1:

We are assuming that when we say “SHADE IT” that that is what the question has asked us to do.

NOTE 2:

In order to draw an inequality graph:

You must understand our section on formula for a straight line.

That is:

1. Always make `y` the subject of the formula

2. Formula of a straight line is `y=mx+c`

3. Plot `x` and `y` guessing values of `x`