Essay

Analyzing Cost Models in Logistics

You are working as a shipping coordinator at a logistics hub. Your company uses the linear model y=12x+3y = \frac{1}{2}x + 3 to calculate the shipping cost, yy (in dollars), of packages based on their weight, xx (in pounds). The corresponding line graph is displayed on the office dashboard for easy reference.

A new logistics assistant asks you how they can read the dashboard's graph to understand the pricing. Write a brief explanation to the assistant that details:

  1. How to visually identify the y-intercept (the baseline fee before adding weight) on the graph, and which specific term in the equation y=12x+3y = \frac{1}{2}x + 3 corresponds to this visual feature.
  2. How to determine the slope (the rate per pound) using a vertical rise and a horizontal run between any two points on the graph, and which specific term in the equation corresponds to this slope.

Be sure to recall and state the exact numerical values for both the slope and the y-intercept as identified from both the graph and the equation.

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Updated 2026-06-05

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