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# Ch 8 Math Vocab

### Linear Functions

QuestionAnswer
A pairing of numbers. relation
Another name for 'x' in a relation or the input domain
Another name for 'y' in a relation or the output range
For each input there is exactly on ouput. function
A test to tell if a linear equation is a function or not. vertical line test
An equation whose graph is a line linear equation
An equation that is solved for y. function form
The set of points in a coordinate plane that represent all the solutions of the equation. coordinate points
A point where a graph crosses the x-axis. x-intercept
A point where a graph crosses the y-axis. y-intercept
The ratio of the line's vertical change to its horizontal change. slope
rise over run slope
y=mx+b slope-intercept form
m slope
b y-intercept
A line that lies as close as possible to the data points best-fitting line
f(x)= function notation
Consists of two or more linear equations with the same variables. system of linear equations
An ordered pair that is a solution of each question in the system. solution of a linear system
Created by: stollerp