Answer:
(c) The x-intercept of f⁻¹(x) is the same as the y-intercept of f(x).
Explanation:
You want to know the relationship between the graphs of function f(x) and its inverse f⁻¹(x).
Inverse function
The inverse of a function maps every y-value of the original function to its corresponding x-value. That is if you have ...
f(a) = b
then the graph of f(x) contains the ordered pair (a, b).
The inverse function will have the ordered pair (b, a). That is,
f⁻¹(b) = a
Application
If an ordered pair (x-intercept) of the inverse function is ...
(P, 0)
Then there will be an ordered pair (0, P) on the graph of the original function. That point is the y-intercept, and its y-coordinate is the same as the x-coordinate of the x-intercept of the inverse function.
The x-intercept of f⁻¹(x) is the same as the y-intercept of f(x).
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Additional comment
The graphs of the two functions are mirror images of each other across the line y=x.
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