
a sequence of numbers in which the difference between any two consecutive terms is the same.
Arithmetic Sequence

A constant function is a function that is written y = k, where k is a real number. The y value is constant for all values of x. The graph of a constant function is a horizontal line.
Constant Function

a relation (set of ordered pairs) such that each x value is associated with only one y value.
Function

The solutions of a linear inequality, forming a halfplane on one side of a line and may or may not also form the line itself.
Graph of Linear Inequality

The portion of a plane on one side of a line.
Halfplane

an equation whose graph is a straight line.
Linear

the line that best represents the trend established by the points in a particular scatter plot. (Also called the trend line).
Line of Best Fit

form of the equation used when you know a point and the slope; can be used to write the equation of the line in slope intercept form. y2 – y1 = m( X – X1)
PointSlope Form

Change in y. The rise of a nonvertical line is noted by its vertical change.
Rise

Change is x. The run of a nonvertical line is noted by its horizontal change.
Run

the graph of a collection of ordered pairs.
Scatter Plot

The slope of a line is the ratio, rise: run. The steepness of a line, which may be calculated by finding the ratio of the difference between the y values of two points on the line to the difference between the corresponding x values of those two points on the line.
Slope

one way to write an equation of a line; uses the form
y = mx + b, where m is the slope and b is the y intercept.
Slopeintercept form

Also known as “General Form” for a linear equation in two variables, x and y. It is usually given as Ax+By=C where, if at all possible, A, B, and C are integers, and A is a nonnegative, and A, B, and C have no common factors other than one.
Standard Form

