The width of a rectangle is two-thirds of its length, and its area is 216 square meters. what is the length?

The length of rectangle is

Step-by-step explanation:

we know that

The area of a rectangle is equal to

where

L is the length of rectangle

W is the width of rectangle

In this problem we have

so

-------> equation A

------> equation B

Substitute equation B in equation A and solve for L

the final function for the graph becomes x-2=-1. before graphing you solve the equation, where x=1. then graph accordingly.   ( on the x-axis, 1 on the line will possess a vertical line.)