First-Degree Equations and Inequalities
Linear equations \(ax + b = 0\) with the parametric discussion, linear inequalities via the sign table, and modelling with linear functions.
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Learning Objectives
- Solve the equation \(ax + b = 0\) and carry out the discussion by cases on \(a\) and \(b\).
- Solve linear inequalities and express the solution set as an interval.
- Model break-even, cost, and rate problems with a single linear function.
About This Course Unit
Solving first-degree equations and inequalities, using the sign of the linear function from Unit 1, and applying linear functions to model real situations in one variable.