Question

The set of ordered pairs (-1, 8), (0, 3), (1.-2), and (2, -7) represent a function. What is the range of the function?

Answer 1

First, the range is all about the y-values, so the set notation needs to have the form:
{ y : y __________}

Because of that, you can eliminate the first and third options that use “x”. Using x would reference the domain.

Second, the range is the set of all y-values used in the function. You only include y-values in the range, so you’d only include 8, 3, -2, and -7 in your answer.
That means it’s the second answer.

Side note:
Some areas would use the notation { y | y = -7, -2, 3, 8}, using “|” instead of “:” in the set notation.f