Answer:
B
Explanation:
You want to know which description of the transformed function p(x) = -4f(x) is incorrect among ...
- reflected over x-axis
- wider
- vertical stretch
Scaling
Your function p(x) is f(x) multiplied by -4. This means points that are above the x-axis on a graph of f(x) will be below the x-axis on the graph of p(x). They will be 4 times as far from the x-axis. This stretches the graph vertically, making it appear narrower than the original.
You can see this in the attachment.
The incorrect description is ...
B. The graph of p(x) will be wider than the graph of f(x).
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Additional comment
Questions like this are about the visual appearance of a graph. If you cannot imagine what the graph looks like, it is useful to use a graphing calculator to make a graph for you to look at.
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