How do you solve this

so the right answer is -1.

Look at the attached picture⤴

Hope it will help u..

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

it has the same slope and a different y-intercept

hope this : )