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Real numbers

all numbers except imaginary numbers

Integer

positive and negative whole numbers including zero

Counting Numbers

positive whole numbers (excludes zero)

Rational Numbers

any number that can be expressed by a fraction

Irrational numbers

decimal numbers that continue forever without repeating

Diagonal

line connecting one vertice to another

y-intercept form

y=mx + b

Slope

rise over run; angle of a line expressed as a fraction; it is the m in the y-intercept form

Parabola

a graph of a line that looks like a U; has the equation X²

Reflection

flopping a point or shape across an line (usually x or y axis)

Translate

moving a point or shape on a graph

Rotate

turning a shape on a graph

ratio

a comparison of two items in a fraction; Can be written with a semicolon; For example, 3:2.

Percentage

number out of 100; can be written as a decimal

Reciprocal

A fraction flipped upside; 1/2 and 2/1 are reciprocals

y-intercept

Point where a line intercepts the y-axis

Coordinate

Location of a point on a graph in the form (x,y) where x moves left and right, y moves up and down

Equation of a horizontal line

y=any number; ex. y=4, y=-6

Equation of a vertical line

x=any number; ex. x=3, x=-1

Area of a circle

Pi time radius squared

Absolute Value

distance from zero; take off the negative sign

Average (mean)

add numbers and then divide by number of terms

Least Common Denominator (LCD)

lowest number that all numbers are factors of

Common Denominator

number that all numbers are factors of

FOIL

Distributing by First, Outer, Inner, Last

Permutation

All the different ways of arranging something

zero property of multiplication

any number times 0 equals 0

Pythagorean Theorem

a²+b²=c²

Area of triangle

1/2 base x height (1/2 bh)

Radius

distance from center to outer edge of a circle

Diameter

distance across a circle through the center

Up

Positive parabolas open . . .

Down

Negative parabolas open . . .

Arc

part of a circle

Equals

In math the term "is" means

Multiply

In math the term "of" means

Mark up

the amount ADDED to the original price of an item is called the

Add the exponents

When multiplying variable with exponents

Multiply the exponents

When taking variables with exponents to a power

Perimeter

the distance around a figure; add all the sides together

Prime Number

a number with only 2 factors....one and itself.