Math Problem Statement

Which situation is best described by the graph shown?

Solution

The graph provided shows a linear relationship, where the line starts at the origin (0, 0) and has a positive slope. This indicates that as the x-value increases, the y-value increases at a constant rate.

Let's analyze the options based on the slope:

  • Option A: JJ purchases chips for $0.75 per bag.

    • This means for each bag of chips (x-axis), the cost increases by $0.75 (y-axis).
    • The graph would have a slope of 0.75 per unit.
  • Option B: Mark buys packs of gum for $1.50 each.

    • This would mean for each pack of gum, the cost increases by $1.50.
    • The slope would be 1.50 per unit.
  • Option C: Paula pays $0.50 per ticket at the fair.

    • This implies the cost increases by $0.50 per ticket.
    • The graph would have a slope of 0.50 per unit.
  • Option D: Franco purchases flowers for $3.00 each.

    • This suggests the cost increases by $3.00 per flower.
    • The slope of the graph would be 3 per unit.

Slope Calculation:

Looking at the graph, when x=1x = 1, y=3y = 3, and when x=2x = 2, y=6y = 6. Therefore, the slope (rate of change) is:

slope=ΔyΔx=6321=3\text{slope} = \frac{\Delta y}{\Delta x} = \frac{6 - 3}{2 - 1} = 3

Since the slope of the line is 3, Option D ("Franco purchases flowers for $3.00 each") is the best match.

Would you like more details or have any questions?

Related Questions:

  1. What is the formula for calculating the slope of a line?
  2. Can you explain how to find the slope from a graph?
  3. How would a graph of a lower price per unit (e.g., $1.50) look?
  4. How can you interpret the y-intercept in this context?
  5. What is the significance of a linear relationship in real-world scenarios?

Tip: When analyzing graphs, the slope gives important information about the rate of change between variables.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope
Graph Interpretation

Formulas

Slope formula: slope = (change in y) / (change in x)

Theorems

Slope of a linear equation

Suitable Grade Level

Grade 6-8