Assignment:
Q1) If a < b, then -a > -b Why?
Q2) What role of operations that applies when you are solving an equation does not apply when you are solving an inequality?
Q3) What is the inherent meaning and justification of cross-multiplication as it applies to solving an inequality?
Q4) What is different about multiplying an equation by a negative number and multiplying an inequality by a negative number?
Provide complete and step by step solution for the question and show calculations and use formulas.