# Analyzing One-Variable Relationships in Context

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Equations can be used to represent real-world relationships. When the quantity a variable represents is known, solving the equation makes it possible to determine unknown information. To create an equation, use the relationship between given quantities.

## Problem-Solving using Modeling

Equations that represent real relationships are called *mathematical models*. What follows is one method of using mathematical models to solve problems.

Suppose a taxi ride from the airport to downtown costs $$46.37.$ Suppose also that it costs $$4.85$ to ride in the taxi, and an additional $\$1.73$ per mile traveled. Calculate the distance of the ride using the following method.

## Exercises

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