Solve and graph the following inequalities:
Solve the inequalities like an equation. Substitute the inequality symbol with an equal sign.
by adding nine to each side.
Choose two numbers, one less than
and one greater than . (Example: and ) Substitute these numbers for to decide which direction the arrow should point. (False) (True)
is less than , we know that the arrow must point to the left. Every number to the left of on a number scale is less than .
Use the same method from part (a).
Solve using the same method from part (a).