The inequality is .
Apply subtraction property of inequality: Subtract 4 from each side.
\ (Subtract:
)
(Additive inverse property:
)
(Additive identity property:
)
Graph the solution set on a number line
\
(Note: A dot means that this point is included in the solution set)
Check:
\To check, substitute 5, a number greater than 5, in .
(Add: 5 + 4 = 9)
The inequality solution set is .