Question

read the description of a proportional relationship. roxanne is measuring the diameter and the radius of different - sized circles. there is a proportional relationship between the radius of the circle in inches, x, and the diameter of the circle in inches, y. a circle with a 3 - inch radius has a diameter of 6 inches. write the equation for the relationship between x and y. y =

Explanation:

Step1: Recall the relationship between radius and diameter

The diameter of a circle is twice the radius.

Step2: Write the equation

If the radius is $x$ and the diameter is $y$, then $y = 2x$.

Answer:

$2x$