G8

Copyright © Swun Math Grade 8 Cumulative Glossary TE

Term Definition Example Unit

irrational

number

the set of all numbers that

cannot be written as a ratio; it

cannot be written as a simple

fraction because the decimal is

non-repeating and non-

terminating

0.101101110... ,

1

irrational

solution

solutions to equations that

cannot be written as a simple

fraction

2

legs the sides that form the right

triangle

5

like terms terms that have the same

variable, power, or constant

4 a + 5 + 2 a – 3

5 b^2 – 6b + 3 b^2

4

line of best fit (^) a straight line drawn through
the center of data points on a
scatter plot; a trend line
12
linear function a function whose graph is a
straight line
y = x— 2
7

Grade 8 • Glossary