Question

Which pairs of variables have a linear relationship? Select two options.

side length and perimeter of 1 face
perimeter of 1 face and area of 1 face
surface area and volume
area of 1 face and surface area
side length and volume

Answer 1

- Side length and perimeter of 1 face (perimeter = 4s) — linear.
- Area of 1 face and surface area (surface area = 6·area of one face) — linear.

The others are quadratic or cubic relations (e.g., area ∝ perimeter^2, volume ∝ side^3).