Choose one of the descriptions above and draw a graph that represents that description.

Question

1. X is the width and y is the length of a rectangle with a constant perimeter.
2. X is the radius and y is the area of a circle.
3. X is the length and y is the width of a rectangle with a constant area.
4. X is the radius and y is the circumference of a circle

this is list of things we can choose from but iI don't really understand what it's asking or even how to do it

Answer 1

Write out an equation for each to start with.

2x + 2y = perimeter = sum of 4 sides.

Area of a circle is A = π r² so y = π x²

A = xy

Circumference = 2π r so y = 2π x

Answer 2

#1 wants you to draw a rectangle and label the 2 dimensions.

Looks like you've got a vocabulary test.