Which equation represents a proportional relationship?

a) y = 2/5x

b) y = 1/3x + 5

c) y = −3x − 1

d) y = 2x + 0.5

A

Step-by-step explanation:

The equation of a proportional relationship has the form

y = kx ← k is the constant of proportionality.

The only one fitting this description is

y = x → A

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

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step-by-step explanation: