Assignment:
Q1. If a < b, then -a > -b. Why?
Q2. What is the inherent meaning and justification of cross-multiplication as it applies to solving an inequality?
Q3. How can you differentiate between a function and an equation?
Q4. Give an example of a mixture type of problem along with the answer.
Provide complete and step by step solution for the question and show calculations and use formulas.