Math ~ Lesson 8-9 Derive & Graph Linear Equations

slope

The measure of the steepness of a line on a graph, equal to its vertical change divided by its horizontal change (rise over run)

y-intercept

The measure the y-coordinate of the point where a line, or graph of a function, crosses the y-axis

define

To identify or explain the meaning of something

derive

To use reasoning and known information to create or generate something

undefined

Without meaning; also the slope of a vertical line

vertical line

A line that goes up and down; it has an undefined slope

horizontal line

A line that runs straight across from left to right. *Think horizon; it has a slope of zero

slope-intercept form

A linear equation in the form y=mx+b, where m is the slope and b is the y-intercept of the line.

linear equation

An equation whose graph is a straight line