# which of the given graphs is a function and which of the functions are one to one. ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071 ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 2, Problem 11RE
To determine

## To find : which of the given graphs is a function and which of the functions are one to one.

Expert Solution

The answer is a) Not a Function, b) Function, c) Function and one to one and d) Not a Function.

### Explanation of Solution

Given information : The graphs of each option is given.

A curve in the coordinate plane is the graph of a function if and only if no vertical line intersect the curve more than once. This condition is not met with options a and d. So a and d are not a function.

Option B and Option C are function, and option c is one to one because for no two values of x, we have same value of y.

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