Chapter 7 pre-algebra glossary

Question 1

function

Answer 1

special relation in which each member of the domain is paired with exactly one member in the range.
(-2,-1), (-4,3), (-5,4), (-9,7)
not an example:
(-2,1), (-2,3),(5,4) (6,7)

Question 2

linear equation

Answer 2

an equation in which the variables appear in separate terms and neither variable contains an exponent other than 1.
ex. y = 1.50x

Question 3

linear relationship

Answer 3

relationships that have straight-line graphs

p. 365

Question 4

rate of change

Answer 4

a rate that describes how one quantity changes in relation to another quantity

Question 5

slope

Answer 5

the steepness of a line; ratio of the rise or the vertical change, to the run, or the horizontal change

vertical change (height) (rise)
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
horizontal change (length) (run)

Question 6

slope intercept form

Answer 6

a linear equation in the form of y=mx+b, where m is slope and b is the y intercept

Question 7

vertical line test

Answer 7

way to determine whether a relation is a function
if any vertical line drawn on the graph f a relation passes through no more than one point on the graph for each value of x in the domain, then the relation is a function.

Question 8

y-intercept

Answer 8

y-coordinate of a point where the graph crosses the y-axis

Question 9

relation

Answer 9

set of ordered pairs

Question 10

domain

Answer 10

set of all x-coordinates from each pair

Question 11

range

Answer 11

set of y-coordinates