G8

Copyright © Swun Math Grade 8 Cumulative Glossary TE

Grade 8 • Glossary

Term Definition Example Unit

scale factor (k) the ratio of the side lengths

between the pre-image and

image of a dilation; also called

dilation factor

Center of dilation= (0,0)

Scale factor= ½

9

scatter plot a graph showing the (positive,

negative, or no) relationship

between two data sets

12

scientific

notation

a method to write very large or

very small numbers as the

product of a number between 1

and 10, and a power of 10

99 = 9.9 × 101

3

similar figures (^) have same shape, but different
sizes; congruent angles and
proportional sides
9, 10
slope (m) the steepness of a straight line;
also called rate of change;
calculated using rise over run
(change of y, over change of x)
or slope-intercept form
6, 7