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?
O {x: x = -1, 0, 1, 2}
O {y: y = -7, -2, 3, 8}
O {x: x = -7, -2,-1, 0, 1, 2, 3, 8}
O {y: y = -7, -2, -1, 0, 1, 2, 3, 8}
Intro
Done

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

Answer 2

The range of the function is: (b) {y: y = -7, -2, 3, 8}

The ordered pairs are given as:

(x,y) = {(-1, 8), (0, 3), (1.-2), and (2, -7)}

The range is the set of output values of the function

The y values represent the range.

So, we have:

y = {8, 3,-2, -7}

Hence, the range of the function is:

{y: y = -7, -2, 3, 8}

Read more about range at:

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