6. Transformations of Graphs of Linear Functions
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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.
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 |
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.