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Two variable equation

An equation in which the value of one variable is dependent upon the other variable

Abscissa

The x coordinate of an ordered pair

Ordinate

The y coordinate of the ordered pair

Linear Equation

An equation that can be put in standard form (Ax+By=C) and A, B, and C are integers,

Slope

The measure of the steepness of a line

Standard form

Ax+By=C

Point Slope Form

y-y₁=m(x-x₁)

Relation

a set of ordered pairs

Domain

the set of first (x) coordinates of a relation

Range

The set of second (y) coordinates of a relation

Function

A relation in which different ordered pairs have different first (x) coordinates

Direct Variation

an equation in the form of y=kx and where k is a non-zero constant

Inverse Variation

y=k/x or xy=k and x is not equal to 0

k (in terms of direct variation)

- called constant of variation

- called constant of proportionality

- called constant of proportionality

k (in terms of inverse variation)

called constant of variation

Slope Formula

m = (y2 - y1) / (x2 - x1)

x-axis

The horizontal number line in the coordinate plane

y-axis

The vertical number lone in the coordinate plane

Quadrant

The four sections the x,y axes divided the coordinate plane into