G8

Copyright © Swun Math Grade 8 Cumulative Glossary TE

Term Definition Example Unit

properties of

exponents

mathematical rules to apply

when solving equations with

exponents

Power to Power (Multiply)

(an)m = anm

Multiply (Like Bases) (Add)

am · an = am+n

Power of a Product (Keep)

anbn = (ab)n

Division (Like Bases) (Subtract)

an (^) =
an—m
am
2
proportional
relationship
a relationship in which the
ratio between two variables is
constant
6
Pythagorean
Theorem
the idea that, in any right
triangle, the sum of the squares
of the two shorter sides is
equivalent to the square of the
hypotenuse
a^2 + b^2 = c^2
5
rate of change (^) same as slope, but the term is
used more often in real-world
problems
7
ratio a comparison of two quantities (^) The ratio of circles to stars:
½ or 1:2 or 1 to 2
6
rational
number
whole numbers, fractions, and
decimals represented as a ratio
of two integers; can be
represented in fractional form
(where x and y are integers & y ≠ 0)
x
y
1

Grade 8 • Glossary