Easy Algebra Step-by-Step

Index 247

Ter m s
defi nition of, 83
dividing out, 142
vs. factors, 119
identifying, 83–86
like, 87, 88–90
middle, 99–101, 127–128, 131, 133
minus sign and, 83–84
monomials. See Monomials
“not equal to” symbol and, 120
polynomials. See Polynomials
unlike, 87
Times symbol (×), 8
Tr inomia ls
defi nition of, 85
identifying, 86
perfect squares, 133–134
quadratic, 127–133, 163 –169
T-table, 185 –186
Two-variable linear equations, 159

Va r iables
coeffi cients of, 65–66
dependent, 197
determining, 64–65
in factoring, 144
function of, 64
grouping symbols and, 66
independent, 197, 198
letter for, 64
Vertical axis, 171, 172f
Vertical line test, 201

Whole numbers
addition of, 2
division of, 2
multiplication of, 2
natural. See Natural numbers
on number line, 2, 2f, 3–4, 3f
opposites of. See Opposite numbers
set of, 2
subtraction of, 2
zero. See Zero

x-a x i s, 171, 172 f
x-coordinate

absolute value of, 171

determining, 173, 173f

diagram of, 172f

order of, 171

i n quad ra nt s, 174 –17 5

x-y T-table, 185 –186

y-a x i s, 171, 172 f

y-coordinate

absolute value of, 171–173

determining, 173, 173f

diagram of, 172f

order of, 171

i n quad ra nt s, 174 –17 5

Zero

addition of, 10, 18

categorization of

as additive identity, 10

as integer, 3

as monomial, 84

as perfect cube, 36

as perfect square, 33

as rational number, 4

as real number, 6–7

as whole number, 2

cube root of, 36

in division, 4, 29, 110, 139, 155,

180 –181

domain of functions and, 196–197

as exponent, 48–49

exponentiation of, 48

multiplication by, 11, 12, 26,

28, 155

natural numbers and, 2

nth root of, 38, 39

opposite of, 2

in ordered pairs, 174

slope of a line, 178, 180–181, 185

slope of line, 178

in slope y-intercept equation,

185 –186

square root of, 5, 32

subtraction of, 22, 24

in x-y T-table, 185

Zero factor property, 12, 165–166