PLEASE HELP IVE TOOK THIS SOOO MANY TIMES AND FAILED

Prove the segments joining the midpoint of consecutive sides of an isosceles trapezoid form a rhombus.
Find the slope of EF and GD.

its either C or D its negative if that help please tell me if im right i might not be though im so so sorry if im wrong

Step-by-step explanation:

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: