Ireally need so i can go to basketball practice its my last problem

Step-by-step explanation:

Zero slope - flat

Undefined slope - vertical

Positive slope - increases from left to right

Negative slope - decreases from let to right

A) Line D is flat, so the slope is 0

B) Line A is vertical, so the slope is undefined

C) Line C increases from left to right, so the slope is positive

D) Line B decreases from left to right, so the slope is negative

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Equations:

A: x = -8

B: y = - x + (line isnt clear, might be wrong)

C: y = x - 1

D: y = -6

39.99 is the correct answer.