Question

read the description of a proportional relationship.
dana is finding the perimeter of different - sized squares. there is a proportional relationship between the side length of the square in inches, x, and the perimeter of the square in inches, y.
the equation that models this relationship is y = 4x.
what is the side length of a square with a perimeter of 20 inches? write your answer as a whole number or decimal.
inches

Explanation:

Step1: Identify the equation

We know the relationship is modeled by \( y = 4x \), where \( y \) is the perimeter and \( x \) is the side length. We are given \( y = 20 \) (perimeter is 20 inches) and need to find \( x \).

Step2: Substitute \( y = 20 \) into the equation

Substitute \( y = 20 \) into \( y = 4x \), we get \( 20 = 4x \).

Step3: Solve for \( x \)

Divide both sides of the equation \( 20 = 4x \) by 4. So, \( x=\frac{20}{4}=5 \).

Answer:

5