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# 8 CCSSM FUNCTIONS

### 8th MATH FUNCTIONS COMMON CORE - COMPLETE

TermDefinition
function a relation in which every domain value is paired with exactly one range value; the out put depends on the input
x-value The horizontal value in a pair of coordinates: how far along the point is. This is always written first part of a pair of coordinates.
vertical line test a test to determine whether a relation is a function. If any vertical line passes through no more than one point of the graph of a relation, then the relation is a function.
input a value that is substituted for the independent variable in a relation or function (the number on which a function operates)
output the result of substituting a value for a variable in a function
rate of change how steep functions go up or down from the initial value a measure of how quickly something changes.
linear function an equation whose graphs is a non vertical line; a function that can be written as y = mx + b where x = the independent variable, and m and b are real numbers.
non-linear function creates a graph that is not a straight line
linear relationship when two variables or quantities are proportionate to one another. As one variable changes, there is a constant rate of change in another variable. In a graphic representation, this is a straight line that passes through data points based on the slope an
slope a measure of the steepness of a line; the ratio of the rise to the run as you move from one point to another along a line
initial value where functions start
y-intercept the y coordinate(s) of the point(s) where a graph intercepts the y-axis
y-value The vertical value in a pair of coordinates, always written second in an ordered pair of coordinates
x-intercept the x coordinate(s) of the point(s) where a graph intercepts the x-axis
Created by: artisteacher