Module 2 — Functions
Use this if equations, function notation, tables, graphs, or piecewise definitions are blending together.
Solving an equation finds values; evaluating a function follows its rule at an input.
The same function can be read from a table, an equation, or a graph.
Use only the branch whose condition contains the input.
A vertical line may cross a function graph at most once.
Which graph cannot represent y as a function of x?
A graph crossed twice by a vertical line.
Got it now? Scroll back up and re-read the section — it should land differently.
Counts and mappings come from .ai/students/alaina/math1330/assignments/index.json. These are task maps, not answer keys.
| WebAssign set | Questions | Textbook sections |
|---|---|---|
| 1330 W - Solve Equ | 19 | §0.6, §0.7, §1.1, §1.2 |
| 1330 W - Fcns | 22 | §0.6, §0.7, §1.1, §1.2 |
Solve polynomial and miscellaneous equations.
Interpret functions numerically, algebraically, and graphically.
Use function equations and piecewise-defined functions.
Apply the vertical-line test.
Build and interpret mathematical models, including cost, revenue, profit, demand, and supply models.
