Find the Equation that Relates x and y x=3 , y=4

$x = 3$ , $y = 4$

Step 1

When two variable quantities have a constant ratio, their relationship is called a direct variation. It is said that one variable varies directly as the other. The formula for direct variation is $y = k x$ , where $k$ is the constant of variation.

$y = k x$

Step 2

Solve the equation for $k$ , the constant of variation.

$k = \frac{y}{x}$

Step 3

Replace the variables $x$ and $y$ with the actual values.

$k = \frac{4}{3}$

Step 4

Use the direct variation model to create the equation.

$y = k x$

Step 5

Substitute the value of $k$ into the direct variation model.

$y = (\frac{4}{3}) x$

Step 6

Simplify the result to find the direct variation equation.

$y = \frac{4 x}{3}$

Find the Equation that Relates x and y x=3 , y=4

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