Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
8. Graphing Absolute Value Functions
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Exercise 7 Page 349

How does the given absolute value function graph compare with the graph of y=|x|?

It is a translation of y=|x| left 4 units.

Practice makes perfect

One way to identify how the given absolute value function graph is related to the graph of y=|x| is by plotting both graphs alongside each other.

We have also made note of a few points on both graphs to help us identify how the graph of y=|x| was translated.

Given Graph Parent Graph
( -6, 2) ( -2, 2)
( 0, 4) ( 4, 4)
( 2, 6) ( 6, 6)

Every point on the graph of y=|x| has been translated left by 4 units. Notice that the y-value is the same, but the x-value in the given graph is 4 units less than that of the parent function.

You can quickly identify translations by observing differences in the x- and y-coordinates of vertices of both graphs. In this case, the parent function's vertex at (0,0) became the given function's vertex at (- 4,0) by translating left by 4 units.