If the Function Is One-To-One, Find Its Inverse $$f ( x ) = \frac { 9 } { x - 7 }$$

question 23

Multiple Choice

If the function is one-to-one, find its inverse. If not, write ʺnot one-to-one.ʺ
- $$f ( x ) = \frac { 9 } { x - 7 }$$

• A) \(f ^ { - 1 } ( x ) = \frac { - 7 + 9 x } { x }\)
• B) \(f ^ { - 1 } ( x ) = \frac { x } { - 7 + 9 x }\)
• C) not a one-to-one
• D) \(f ^ { - 1 } ( x ) = \frac { 7 x + 9 } { x }\)

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Quadratic Trend Line

A parabola that best fits the data in a scatterplot, used to model relationships that follow a quadratic pattern, showing accelerations or decelerations in trends.

Mean Absolute Deviation

A measure of variability that calculates the average distance between each data point and the mean of the data set.

Actual Values

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The projected or predicted numerical values in the future based on current and historical data analysis.