Find the Constant of Variation 2y=10x

$2 y = 10 x$

Step 1

Divide each term in $2 y = 10 x$ by $2$ and simplify.

Divide each term in $2 y = 10 x$ by $2$ .

$\frac{2 y}{2} = \frac{10 x}{2}$

Simplify the left side.

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{2 y}{2} = \frac{10 x}{2}$

Divide $y$ by $1$ .

$y = \frac{10 x}{2}$

Simplify the right side.

Cancel the common factor of $10$ and $2$ .

Factor $2$ out of $10 x$ .

$y = \frac{2 (5 x)}{2}$

Cancel the common factors.

Factor $2$ out of $2$ .

$y = \frac{2 (5 x)}{2 (1)}$

Cancel the common factor.

$y = \frac{2 (5 x)}{2 \cdot 1}$

Rewrite the expression.

$y = \frac{5 x}{1}$

Divide $5 x$ by $1$ .

$y = 5 x$

Step 2

Since the equation can be written in the form $y = k x$ , $y$ varies directly with $x$ and $k$ . The constant of variation, $k$ , is $5$ .

$5$