The equation is
Apply subtraction property of inequality: Subtract 9 from each side.
\ (Commutative property:
)
(Additive inverse property:
)
(Additive identity property :
)
(Subtract:
)
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 4, a number and less than 4, in .
(Substitute
)
(Add :
)
The inequlity is true.
\The inequality solution is .