Algebra 2

Reciprocal

another name for multiplicative inverse

Function

a graph that passes the vertical line test

Domain

x values, all possible inputs, independent variable

Range

y values, all possible outputs, dependant variable

Slope

Can be positive, negative, zero, or undefined

Dependent

a system with infinite solutions

Imaginary Number

a number that results from a negative under a square root

Quadratic

a polynomial with a degree of two

Opposite

additive inverse of a number

Irrational Number

A number that does not terminate or repeat

End Behavior

direction of the graph at each end (tails)

Linear

Function with a degree of 1

Complex number

any number that can be written a+bi, where a and b are real numbers and i is an imaginary unit

Parabola

The shape of the graph of a quadratic function

(degree of 2)

Zeros

Another name for finding the x-intercept or the “solution” of a graph

Slope intercept form

Y-mx+b

Discriminant

b²-4ac, determines the type of solution and how many there will be for a quadratic equation

Inconsistent Solution

A system of equations that have no solution

Point slope form

y-y1=m(x-x1)

Absolute value

The distance a number is from 0 on a number line. ALWAYS POSITIVE