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Real numbers

all numbers except imaginary numbers

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Integer

positive and negative whole numbers including zero

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Counting Numbers

positive whole numbers (excludes zero)

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Rational Numbers

any number that can be expressed by a fraction

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Irrational numbers

decimal numbers that continue forever without repeating

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Diagonal

line connecting one vertice to another

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y-intercept form

y=mx + b

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Slope

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

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Parabola

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

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Reflection

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

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Translate

moving a point or shape on a graph

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Rotate

turning a shape on a graph

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ratio

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

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Percentage

number out of 100; can be written as a decimal

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Reciprocal

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

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y-intercept

Point where a line intercepts the y-axis

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Coordinate

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

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Equation of a horizontal line

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

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Equation of a vertical line

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

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Area of a circle

Pi time radius squared

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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

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FOIL

Distributing by First, Outer, Inner, Last

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Permutation

All the different ways of arranging something

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zero property of multiplication

any number times 0 equals 0

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Pythagorean Theorem

a²+b²=c²

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Area of triangle

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

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Radius

distance from center to outer edge of a circle

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Diameter

distance across a circle through the center

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Up

Positive parabolas open . . .

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Down

Negative parabolas open . . .

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Equals

In math the term "is" means

###
Multiply

In math the term "of" means

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Mark up

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

###
Add the exponents

When multiplying variable with exponents

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Multiply the exponents

When taking variables with exponents to a power

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Perimeter

the distance around a figure; add all the sides together

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Prime Number

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

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