Linear Equations/Functions

Question 1

graphing method

Answer 1

solution revealed as the point of intersection of the two lines

Question 2

substitution

Answer 2

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

Question 3

elimination method

Answer 3

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

Question 4

relation

Answer 4

any set of ordered pairs

Question 5

domain

Answer 5

the set if all input values of a relation

Question 6

range

Answer 6

the set of all output values in a relation

Question 7

ordered pair

Answer 7

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

Question 8

coordinate plane

Answer 8

composed of 2 axis which divide the plane into four quadrants

Question 9

coordinate plane aka

Answer 9

cartesian plane

Question 10

function

Answer 10

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

Question 11

independent variable

Answer 11

input value

Question 12

dependent variable

Answer 12

output value

Question 13

function notation

Answer 13

f(x) or f of x

Question 14

linear function

Answer 14

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

Question 15

criteria (3) of a linear function

Answer 15

1) no variable products/ everything to the power of one
2) no variables in denominator
3) graph is a straight line

Question 16

vertical line test

Answer 16

a tool used to determine if a relation is a function

Question 17

elimination method aka

Answer 17

linear combination method

Question 18

definition of a system of equations

Answer 18

two or more equations in the same variables