Which of the following sets of ordered pairs represents a function?
{(-22)}
{(-14)}
{(-16)}
{(21)}

Shouldn't the answer be: (-1,4),(1,4),(2,4),(-2,4)

.

step-by-step explanation:

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: