BuyFind

Precalculus: Mathematics for Calcu...

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

Precalculus: Mathematics for Calcu...

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

Solutions

Chapter 2.2, Problem 61E
To determine

The equation defines y as a function of x or not.

Expert Solution

Answer to Problem 61E

Here, y is not function of x .

Explanation of Solution

Given information : The equation is x+y2=9 .

Concept used : If y has only one value for each value of x , then y can be called as the function of x

Calculation :

  x+y2=9y2=9xy=±9x

Thus, the above equation is a rule that gives two value of y for each value of x .

Hence, y is not a function of x .

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