Question

Choose the correct description of the graph of the inequality −x < 3.

Open circle on 3, shading to the left.

Closed circle on −3, shading to the left.

Open circle on −3, shading to the right.

Closed circle on 3, shading to the right.

Answer 1

Okay so the only problem I have so far is how do I know If this is an open circle or not

Answer 2

if there is an equal sign, the circle is closed
if there is no equal sign, the circle is open

keep in mind, you do not want x to be negative, so how do you make it positive ?