Calculate the perimeter of the following figure

answer:

the perimeter is the length of the outline of a shape. to find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. the area is measurement of the surface of a shape.

step-by-step explanation:

thats the best i can tell you without ah picture fam

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value