3 Quiz If y varies directly with x and y = 12 when x = 4, find y when x = 3.
Write and solve a direct variation equation to find the answer.

y varies of directly as x. This means that the equation is of the form y=kx where k is any number.

Substituting y=12 when x=4, we get

12=k×4⇒k=3

Hence, the required equation is y=3x.

The value of y when x=5 is y=3x5=15.

Step-by-step explanation:

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step-by-step explanation:

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step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)