How do you graph the inequality #x - 1 > -10# on a number line?
With an open dot at the
In inequalities you are allowed to add or subtract the same number at both sides.
You are also allowed to multiply both sides with the same number,
BUT : if the number you multiply by is negative, the inequality reverses:
In this case we only have to add
(that's where the
Since the value of
In some methods an open half circle is used.
(If it were