Big Ideas Math Algebra 1, 2015
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Big Ideas Math Algebra 1, 2015 View details
6. Transformations of Graphs of Linear Functions
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Exercise 29 Page 152

Make a table of values to find points from each of the new graphs.

The graph of g is a vertical shrink of the graph of f by a factor of 14.

Practice makes perfect

First, let's use a table of values to find points on the graph of f(x)=x-2.

x x-2 f(x)
0 ( 0)-2 -2
3 ( 3)-2 1
6 ( 6)-2 4
We can plot these points and connect them with a straight line to have the graph of f(x).

Now, let's look at how the function g(x)= 14f(x) differs from f(x).

x f(x) 1/4f(x) g(x)
0 -2 1/4( -2) -1/2
3 1 1/4( 1) 1/4
6 4 1/4( 4) 1

If we plot these points on the same coordinate plane as f(x), we can see that our points have been shrunk a quarter as far away from the x-axis as they were before.

Therefore, the graph of g is a vertical shrink of the graph of f by a factor of 14.