Which is an accurate comparison of the functions?

For a linear function with slope m, its inverse swaps the input and output, so the inverse has slope 1/m (assuming m is nonzero). That is the reciprocal of the original slope, making A, “The reciprocal of the slope of f of x is the same as the slope of f inverse of x,” accurate. The inverse’s slope is not generally the negative reciprocal.

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