Answer should be A. 2x + y = 4, hopefully this helped :]
Answer: r = 50 miles/h
Step-by-step explanation:
Let r be the rate of average speed.
Then
r = D/t
r = 150/3
r = 50 miles/h
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Slope = (9 + 3)/(-1 + 2) = 12/1 = 12
answer
12
The first graph is not a function because it has two values at x = 3
Definition of a function is that it is a relation that assigns exactly one value for each value in it's domain.