23 terms

# THS Pre-Algebra Chapter 8

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Arithmetic Sequence
Sequence in which the different between any two consecutive term is the same
Common Difference
Different between any two consecutive terms in an arithmetic sequence
Constant of Variation
Rate of change
constant rate of change
rate of change between any two data points in a linear relationship
dependent variable
variable in a relation with a value that depends on the value of the independent variable
Direct Variable
a special type of linear equation that describes rate of change.
Family of Functions
A set of functions that are related in some way.
Function Notation
A way to name a function that is defined by an equation
Independent Variable
Variable in a function with a value that is subject to choice
line of fit
is a line that is very close to most of the data points
linear equation
is an equation whose graph is a line
linear relationship
Relationships that have straight line graphs
point-slope form
equation of form y-y1=m (x-x1), where m is the slope
rate of change
change in one quantity with respect to another quantity
sequence
an order of a list of numbers, such as, 0,1,2,3 or 2,4,6,8
slope
The ratio of the rise, or vertical change, to the run, or horizontal change. the slope describes the steepness of a line.
slope-intercept form
a linear equation in the form y=mx+b, where m is the slope and b is the y intercept
substitution
use algebraic methods to find an exact solution of a system of equations
system of equations
a set of two or more equations with the same variables.
term
Each number within a sequence.
vertical line test
if any vertical line drawn on the graph of a relation passes through no more than one point on the graph for each value of x in a domain.
x-intercept
the x-coordinate of a point where a graph crosses the x-axis
y-intercept
the y-coordinate of a point where a graph crosses the y-axis