Question

Which set of ordered pairs represents a function?a) {(8,-5), (1,0), (1,-5),(-5,6)}b) {(9,-4), (5,4), (9,-6),(4,-7)}c) {(7,-8),(-2,-6),(-1,-1),(-5, -1)}d) {(-3,-3), (8,6), (8,7), (1,8)}Submit Answer

Answer 1

The set of ordered pairs which represents a function is option C

To determine if an ordered pair is a function, we need to know what a function is.

A function has only one input and one output. This will enable us find which ordered pair fall in this range.

The first number is the domain= x value.

The second number is the range = y value

Let's check out the options:

a) Domain: 8, 1, 1, -5

Range: -5, 0, -5, 6

Here, the input 1 has 2 outputs (0 and -5)

b) Domain: 9, 5, 9, 4

Range: -4, 4, -6, -7

Here, the input 9 has 2 outputs (-4 and -6)

c) Domain: 7, -2, -1, -5

Range: -8, -6, -1, -1

Here, each of the input have 1 output

This is a function.

d) Domain: -3, 8, 8, 1

Range: -3, 6, 7, 8

Here, the input 8 has 2 outputs (7 and 8)

Hence, the set of ordered pairs which represents a function is option C