K(a)= |a|-2, find k(-9)

7

Step-by-step explanation:

k(a) = |a| -2

=> k(-9) = |-9| - 2 = 9 - 2 =7

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: