Keystone Vocab

Vocab 1

100

A number, a variable, or a combination of a number and a variable

term

200

when the terms of a polynomial are arranged in 1) alphabetical order and 2) exponential order (from largest to smallest)

standard form

300

A coordinate system formed by the intersection of a horizontal number line and vertical number line- x and y

coordinate plane

400

Two or more linear equations to be solved at the same time (with the same variables)

systems of linear equations

500

-b±[√b²-4ac]/2a

quadratic formula

Vocab 2

100

A letter that represents a value that can change or vary

variable

200

5x + 7x and 4y - y are what kind of terms

like terms

300

x coordinate of a point where a graph crosses the x axis; y coordinate of this point is zero

x-intercept

400

A relation in which each element of the domain is paired with exactly one element in the range

function

500

reverse distribution of a quadratic function

factoring (quadratic)

Vocab 3

100

A number multiplied by a variable in an algebraic expression.

Coefficient

200

Any number that can be written as a fraction; includes natural, whole, and integer numbers; includes decimals that end or repeat

rational number

300

y-coordinate of a point on a line that crosses the y-axis; when x = 0 (ex: (0,3))

y-intercept

400

All of the input or x values in a function

domain

500

the graph of a quadratic function

parabola

Vocab 4

100

A value that does not change; an integer without a variable in an expression or equation

constant term

200

a number that can NOT be expressed as a fraction; includes decimals that never end or repeat - Pi or any square root of an imperfect square are considered irrational

irrational number

300

Rise over run

slope

400

All of the output or y values in a function

range

500

the point where the axis of symmetry and the graph of a quadratic meet

vertex

Vocab 5

100

A mathematical phrase made up of terms; each term is separated by a + or -

algebraic expression

200

another name for a square root

radical

300

A pair of numbers that can be used to locate a point on a coordinate plane, for example (3,2); also known as a coordinate or a point

ordered pair

400

The greatest number/variable that is a factor of each of two or more numbers.

greatest common factor

500

PEMDAS

parentheses, exponents, multiplication/division, addition/subtraction