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

solve for x. You get x > -3 (remember to flip the inequality when you divide by a negative).
So...open circle, shading to the right.

Answer 2

Thank you very much! So any number less than 0 is an open circle?