If y varies directly with x at a constant rate of -0.2, which of the following shows possible
values for x and y?
A x= -15 and y = 3
B X = 2 and y = -10
C X=-25 and y=-5
D X = 3 and y = 0.6

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:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: