-4x + 9y = 9
X - 3y = -6

  (x, y) = (9, 5)

Step-by-step explanation:

We can add 4 times the second equation to the first to eliminate x:

  (-4x +9y) +4(x -3y) = (9) +4(-6)

  -3y = -15 . . . . . . simplify

  y = -15/-3 = 5 . . . . divide by -3

__

Substituting that into the second equation, we can find x:

  x -3(5) = -6

  x = 9 . . . . . . . add 15

The ordered pair that satisfies both equations is ...

  (x, y) = (9, 5)

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925

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: