### Home > INT1 > Chapter 9 > Lesson 9.1.2 > Problem 9-18

9-18.

Thui wrote the following inequalities for a problem that she was solving:

Find the boundary points of the two equations.

Test numbers on all sides of the boundary points.

or

or

or

or

9-18.

Thui wrote the following inequalities for a problem that she was solving:

Find the boundary points of the two equations.

Test numbers on all sides of the boundary points.

or

or

or

or