Why do perpendicular lines intersect at 90 degrees.

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:

i dont understand the question? ?

step-by-step explanation:

lol   i know im kinda tired too

-10

step-by-step explanation: i dont have any explanation on that xd