(i need a answer for this)

which of the following relations is a function? *

a. {(1, 2), (-1, 3), (-1, 8)}
b. {(3,7), (3, 6), (5, 3)}
c. {(0, 4), (5, 6), (5, 8)}
d. {(1, 2), (2, 2), (3, 4)}

D. An input (x) can only be with one output (y).

Step-by-step explanation:

we need more info to solve this

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: