Chapter 4 - Exponential and Logarithmic Functions - Section 4.2 One-to-One Functions; Inverse Functions - 4.2 Assess Your Understanding - Page 290: 1

Yes, the given set of ordered pairs represents a function because for each element in the domain there is a unique element in the co-domain.

For a function, every input must have exactly one output. Each element in the domain should pair with a unique element in the co-domain. Thus, the given set of ordered pairs represents a function. Yes, the given set of ordered pairs represents a function because for each element in the domain there is a unique element in the co-domain.