Math Problem Statement

What is the slope of the graph, and what does it represent in this situation? You must show ALL work to earn full credit.

Solution

Let's analyze the graph to find the slope and its interpretation.

Step 1: Understanding the graph

The graph shows a linear relationship between:

  • Number of customers (# Customers) on the horizontal axis.
  • Number of bagels remaining (# Bagels Remaining) on the vertical axis.

The slope of the graph represents the rate at which the number of bagels decreases per customer served.

Step 2: Identify two points on the line

From the graph:

  • Point 1: (10,225)(10, 225)
  • Point 2: (50,75)(50, 75)

Step 3: Calculate the slope

The slope formula is: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substitute the points: m=752255010=15040=3.75m = \frac{75 - 225}{50 - 10} = \frac{-150}{40} = -3.75

Thus, the slope is 3.75-3.75.

Step 4: Interpretation of the slope

The slope of 3.75-3.75 means that for every customer served, 3.75 bagels are sold (or removed from inventory).

Final Answer:

  1. Slope: 3.75-3.75
  2. Interpretation: The slope indicates that for every customer served, 3.75 bagels are sold.

Would you like further clarification or details about this calculation? Here are some follow-up questions to deepen understanding:

  1. How would you calculate the total number of bagels sold after serving a certain number of customers?
  2. What does the y-intercept represent in this context, and how can it be found from the graph?
  3. How could this linear model be expressed as an equation y=mx+by = mx + b?
  4. If 60 customers are served, how many bagels remain based on this model?
  5. What is the significance of the negative sign in the slope?

Tip: Always interpret the slope in the context of the real-world scenario when working with word problems!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope Calculation

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)

Theorems

Linear Relationship

Suitable Grade Level

Grades 7-9