# Linear Equations/Functions Flashcards

graphing method

solution revealed as the point of intersection of the two lines

substitution

isolate a variable, substitute that into the other equation, solve for the new variable

elimination method

add two equations together to eliminate either the x’s or y’s

relation

any set of ordered pairs

domain

the set if all input values of a relation

range

the set of all output values in a relation

ordered pair

composed if two numbers that represent a location on a coordinate plane

coordinate plane

composed of 2 axis which divide the plane into four quadrants

coordinate plane aka

cartesian plane

function

special relation in which each input value is matched with a distinct (unique) output value

independent variable

input value

dependent variable

output value

function notation

f(x) or f of x

linear function

a function in which all of the variables are raised to the first power

criteria (3) of a linear function

1) no variable products/ everything to the power of one

2) no variables in denominator

3) graph is a straight line