You could produce a pair of like terms with opposite coefficients by multiplying the first equation by what number? 6
If you multiply the first equation by 6, the following system is the result.

3x + 9y = -42
-3x + 2y = -2

To solve this system by elimination,
✔ add
the equations.
The solution to the system is

(
1/2
⇒ -2,
5
⇒ -4)

the circle one

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: