### Home > CC4 > Chapter 2 > Lesson 2.1.2 > Problem 2-21

2-21.

Substitute 1 in for

*x*and evaluate the function.What does it mean when there is a zero in the denominator?

2-21.

Substitute 1 in for

*x*and evaluate the function.What does it mean when there is a zero in the denominator?