Answer: -2, which is choice C
Work Shown:

The slope is -2
The greatest number in the plot is 66, and the least number is 19. If you subtract 19 from 66, the answer is 47.
Step-by-step explanation:
3x + y
3(1.5)+0.5
=5
!!!!!!!!!!
Start with the first sentence, and the definition of the area of a rectangle:
l * w = 36
Rewrite the equation to get
l = 36 / w
or
w = 36 / l
Either one shows the inverse relationship between w and l.
Assuming the last part wants you to write an equation for an x-y graph, the equation would be
y = 36 / x