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chapter 2 review
| Term | Definition |
|---|---|
| absolute value function- a function of the form f(x) = |mx+b| + c | a function of the form f(x) = |mx+b| + c |
| dependent variable | the value of y depends on the value of x |
| direct variation | A linear function defined by an equation of the form y= kx, where k= 0 |
| domain | of a relation is the set of all inputs, or x- coordinates of the ordered pairs |
| function | is a relation in which each element of the domain is paired with exactly one element in the range |
| function notation | f of x |
| independent variable | because the value of y depends on the value of x |
| linear equation | y=3x + 2 |
| linear function | A function whose graph is a line |
| linear inequality | is an inequality in two variables whose graph is region of the coordinate plane that is bounded by a line |
| mapping diagram | which links elements of the domain with corresponding elements of the range |
| parent function | is the simplest function with these characteristics |
| point-slope-function | y -- y1 = m(x- x1) |
| range | of the relation is the set of all outputs, or - coordinates of the ordered pairs |
| reflection | in the x- axis changes y- values to their opposites |
| relation | is a set of pairs of input and output values |
| scatter plot | is a graph that relates two different sets of data by plotting the data as ordered pairs |
| shrink | reduces y-values by a factor between 0 and 1 |
| slope | of a non vertical line is the ratio of the vertical change to a corresponding horizontal change |
| slope |
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