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Which equation describes a relationship that is directly proportional

A.y = 9
B.y = 1/35
C.y = 3x
D.y = x +4

1 Answer

1 vote

Answer:

C

Explanation:

the equation describing a relationship that is directly proportional is

y = kx ← k is the constant of proportionality

from the given list the only one fitting this description is

y = 3x

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