Essay

Graphing Large-Scale Linear Cost Models

A logistics company uses the equation y = 0.2x + 45 to model the daily operating cost (y) based on miles driven (x). You are asked to explain to a new technician how to graph this specific model on a coordinate plane. In your explanation, describe the step-by-step process used to plot the line. Be sure to include:

  1. The coordinates of the y-intercept.
  2. Why a standard -10 to 10 coordinate grid is not suitable for this equation.
  3. How to convert the decimal slope (0.2) into a practical fraction for a large-scale grid and the coordinates of the second point you would plot based on that fraction.

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Updated 2026-04-19

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