Chapter Review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Absolute value function | a function of the form f(x)= |mx+b|+c where m is does not equal 0
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| dependent variable | y
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| direct variation | A linear function defined by and equation of the form y=kx, Where k is not equal to 0
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| domain | is the set of all inputs, or x-coordinates of the ordered pairs
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| function | is a relation in which each element of the domain is paired with exactly one element in the range
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| function notation | f(x) as "f of x" or "a function f of x"
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| independent variable | x
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| linear equation | represent a linear function, is any ordered pair (x,y) that makes the equation true
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| linear function | a function whose graph is a line
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| linear inequality | is an inequality in two varibales whose graph is a region of the coordinate plane that is bounded by a line
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| parallel lines | never ending lines
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| perpendicular lines | lines that cross and form a 90 degree angle
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| mapping diagram | links elements of the domain with corresponding elements of the range
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| parent function | is the simplest function with these characteristics
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| point-slope form | y-y1= m(x-x1)
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| range | is the set of all outputs, or y-coordinates of the ordered paired
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| reflection | in the x-axis changes y-values to their opposites. when you change the y-values of a graph to their opposites, the graph reflects across the x-axis
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| relation | is a set of pairs of input and output values
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| scatter plot | is a graph that relates two different sets of data by plotting the data as ordered pairs
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| shrink | reduces y-values by a factor between 0 and 1, thereby compressing the graph vertically
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| slope | is the ratio of the vertical change to a corresponding horizontal change
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| slope-intercept form | y=mx+b
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| standard form | Ax+By=C
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| stretch | multiplies all y-values by the same factor greater than1, thereby stretching a graph vertically
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| transformation | change of a parent function
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| translation | a graph horizontally, vertically, or both. results in a graph of the same shape and size but possible in a different position
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| trend line | is a line that approximates the relationship between the data sets of a scatter plot
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| vertex | is a point where the function reaches a maximum or minimum
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| vertical-line test | tells whether the relation is a function
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| x-interept | is the point at which the line crosses the x-axis
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| y-intercept | is the point at which the line crosses the y-axis
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