section 2

Question 1

a set of pairs of input and output values

Answer 1

relation

Question 2

a relation is the set of all outputs, or y-coordinates of the ordered pairs

Answer 2

range

Question 3

is a relation in which each element of the domain is paired with exactly one element in the range

Answer 3

function

Question 4

f(x) as ““f of x” or “a function f of x”

Answer 4

function notation

Question 5

relation is the set of all inputs, or x-coordinates of the ordered pairs

Answer 5

domain

Question 6

links elements of the domain with corresponding elements of the range

Answer 6

mapping diagram

Question 7

on the graph of a relation to tell whether the relation is a function

Answer 7

vertical line test

Question 8

y-intercept

Answer 8

line is the point at which the line crosses the y-axis.

Question 9

slope

Answer 9

y2-y1

x2-x1

Question 10

x-intercept

Answer 10

line is the point at which the line crosses the x-axis.

Question 11

point-slope form

Answer 11

y-y1=m(x-x1)

Question 12

linear equation

Answer 12

a solution of a linear equation is any ordered pair

Question 13

independent variable

Answer 13

x is the

Question 14

standard form of a linear equation

Answer 14

Ax+By=C

Question 15

slope-intercept form

Answer 15

y=mx+b

Question 16

linear function

Answer 16

a function whose graph is a line

Question 17

dependent variable

Answer 17

y is the dependent variable

Question 18

scatter plot

Answer 18

a graph that relates two different sets of data as ordered pairs

Question 19

trend line

Answer 19

a line that approximates the relationship between the data sets of a scatter plot.