Chapter 9, Problem 1CR

To determine

To find whether the relation is a function.

Answer to Problem 1CR

The relation $\left\{\left(5,3\right),\left(-5,4\right),\left(4,2\right),\left(4,1\right)\right\}$ is not a function.

Explanation of Solution

Given information:

The given relation is:

  $\left\{\left(5,3\right),\left(-5,4\right),\left(4,2\right),\left(4,1\right)\right\}$

The relation $\left\{\left(5,3\right),\left(-5,4\right),\left(4,2\right),\left(4,1\right)\right\}$ is not a function because the domain $4$ is paired with two range values.