Which of the following sets of points is a direct variation? (0, 0); (2, 4); (5, 15) (0, 0); (-1, -2); (1, 2) (3, 6); (-2, 4); (-1, 2) (0, 5); (1, 6); (2, 7)

(0, 0); (-1, -2); (1, 2)  I'm not very good at math but, I hope it helped!!

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: