Suppose each side of a pentagon has length x Let y be the pe
     Suppose each side of a pentagon has length x. Let y be the perimeter of the pentagon. Use the table to related the independent variable x to the dependent variable y. First describe the relationship in words. Then write an equation  Describe the relationship in words.  The value of X (1)  equals the value of y. Write an equation.  
  
  Solution
From the given table we can observe that the ratio of y and x is constant and the value is 5.
15/3 = 20/4 = 25/5
So , the value of x times 5 equals the values of y.
5x=y is the equation.

