The original function is 
Write
as
or
First solve the case
.
(Subtract 3 form each side)
(Additive inerse property:
)
(Subtract:
)
Next solve the case
.
(Subtract 3 form each side)
(Additive inerse property:
)
(Subtract:
)
First, draw a number line.
\To graph the solutions set, mark the numbers –13 and 7 on number line.
\
The solution set is
.