
Philip P. answered 09/24/14
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-p < 0
To get rid of the minus sign, multiply both sides by -1. When you multiply or divide an inequality by a negative number, you have to flip the inequality sign, in this case from < to >
p > 0
<--|----|----|----o----|----|----|----|----|----|----|----|--> ∞
-3 -2 -1 0 1 2 3 4 5 6 7 8