Which graphs in Exercises 96–99 represent functions that have inverse functions?
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
3. Functions
Function Composition
Problem 78
Textbook Question
Graph the inverse of each one-to-one function.

Verified step by step guidance1
Identify that the red curve represents a one-to-one function, which means it has an inverse function.
Recall that the graph of the inverse function is the reflection of the original function across the line \(y = x\).
To graph the inverse, take each point \((a, b)\) on the original function and plot the point \((b, a)\), effectively swapping the \(x\) and \(y\) coordinates.
Draw the line \(y = x\) as a reference, which is a diagonal line passing through the origin with a 45-degree angle, to help visualize the reflection.
Sketch the inverse function by reflecting the entire red curve across the line \(y = x\), ensuring the shape is mirrored correctly.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
One-to-One Functions
A one-to-one function assigns each input exactly one unique output, and no two different inputs share the same output. This property ensures the function has an inverse, as each output corresponds to only one input.
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Decomposition of Functions
Inverse Functions
The inverse of a function reverses the roles of inputs and outputs, swapping x and y values. Graphically, the inverse reflects the original function across the line y = x, meaning points (a, b) on the function become (b, a) on its inverse.
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Graphing Logarithmic Functions
Graphing Inverse Functions
To graph an inverse function, reflect the original function's graph over the line y = x. This involves swapping coordinates of key points and ensuring the inverse passes the vertical line test, confirming it is a function.
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Graphs of Logarithmic Functions
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