Question

you are making a rectangular chicken run using an existing wall on the one side. you have 18 metres of netting to use. Show the area A m^2 of the run is given by A=18x-2x^2

Answer 1

So one side is already given. You then use the remaining 18m on the remaining three sides. Label the sides x and y. Now you know what you are going to use the netting for. The perimeter minus that one side. Rewrite y in terms of x

Answer 2

still lost...

Answer 3

Try drawing a picture

Answer 4

the image they gave me

Answer 5

So you won't use any netting on the wall. So you know the sum of the lengths of the remaining sides will be 18m since you will use your netting on it. Write out that expression