Findf^−1(x) for the function f(x)=−7x−7.
1 answer:
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Answer:
B. Multiply each x-value in the table by -1.
Step-by-step explanation:
A point reflected across the y-axis has the same y-value, but the x-value is replaced by its opposite. For example, (-2, -31) reflected across the y-axis becomes (2, 31).
The appropriate choice is ...
... B. Multiply each x-value in the table by -1.
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<em>Comment on the graph</em>
The purple points are the ones in the given table. The red points are the same with their x-coordinate multiplied by -1. You can see that they are the reflection of the purple points across the y-axis. The lines joining the points are to help you see the points and which data set they are in.
Putting both equations into standard form, we have the system
x -2y = 4
x -2y = -12
The lines these equations describe are parallel.
x -2y = 4
x -2y = -12
The lines these equations describe are parallel.