Which equation represents a proportional relationship that has a constant of proportionality equal to 2?

Step-by-step explanation:

We are given that

The proportion constant=k=2

We know that

Direct proportion: When one quantity increases then other quantity is also increase.When one quantity decreases then other quantity is also decrease.

Mathematical representation:Let  one quantity= x and second quantity=y

Where k= Proportionality constant

Substitute the value of k

This is required equation which shows proportional relationship.

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

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