# Chapter 2.1-2.3 Test Outline

From Huben's Wiki

2.1:

- vocabulary of graphs, relations (very important!)
- especially one-to-one, vertical line test, quadrants, Cartesian plane, mapping, discrete

- understand domain and range
- tests for function and one-to-one

2.2:

- identify linear equations
- standard form of linear equations (as opposed to slope-intercept form)
- find intercepts of standard form linear equations
- graph lines by their intercepts

2.3:

- synonyms
- rate of change
- slope
- rise / run
- Δy / Δx
- (y2 - y1) / (x2 - x1)

- slopes of vertical and horizontal lines
- perpindicular slopes and their products
- graph // and perp. lines