i need help learning how to write a linear equation that represents the area and perimeter of a rectangle.

Question

the lesson sheet they gave us shows the short side of the rectangle as (3x-3)cm and the long side as 6 cm however in class they did not specify on how we must write a linear equation using this information

Answer 1

So we know the area of a rectangle is given by...

A = length x width

Let's define the short side of the rectangle as the width --> 3x-3 = 3(x-1)

The length is then 6

Area = 6 * 3(x-1) = 18(x-1)

The linear equation for the area is 18(x-1)