Question

lesson practice
8.5.04
name
date
problems 1–2: write an equation that expresses the output as a function of
the input. then determine the independent and dependent variables.

1. the perimeter, p, of a square with side length s.

equation:
independent variable:
dependent variable:

Explanation:

Step1: Define perimeter formula

A square has 4 equal sides, so perimeter is 4 times side length: $p = 4s$

Step2: Identify independent variable

The side length $s$ is chosen freely, so it is independent.

Step3: Identify dependent variable

The perimeter $p$ depends on the value of $s$, so it is dependent.

Answer:

Equation: $p = 4s$
Independent variable: $s$
Dependent variable: $p$