Math Problem Statement
Solution
The graph in the image shows a line that represents a proportional relationship. To match the proportional relationship to a scenario, let's first determine the slope of the line.
Step 1: Analyzing the Graph
- The graph has the line passing through the origin , which is characteristic of proportional relationships.
- From visual inspection, the line appears to pass through points like , meaning for every 5 units increase on the x-axis, there is a 3-unit increase on the y-axis. This gives a slope (rate of change) of , or 3 cakes per 5 days.
Step 2: Comparing to the Given Scenarios
Now, let's compare this rate to the options provided:
-
A: "A chef bakes 3 cakes every 5 days."
This matches the slope we calculated from the graph: . -
B: "Michael paid $25 for 4 hamburgers."
The rate here would be , which does not match the graph's slope. -
C: "Gail can buy 5 pencils for $10 at the school store."
This gives a rate of , which is also different from the graph. -
D: "Every 14 days, a worker deposits $25 into a savings account."
This gives a rate of , which is not the same as the graph's slope.
Conclusion:
The correct answer is A: A chef bakes 3 cakes every 5 days because it directly matches the slope of the line on the graph, which is .
Would you like more details on any step? Here are some additional questions to consider:
- What are proportional relationships and how are they represented graphically?
- How do you calculate the slope of a line on a graph?
- Why do proportional relationships always pass through the origin?
- How do you compare different rates of change in word problems?
- Can a graph of a proportional relationship ever have a curve?
Tip: When analyzing proportional relationships, always look for the constant rate of change, or slope, which is the same between any two points on the line.
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Math Problem Analysis
Mathematical Concepts
Proportional Relationships
Slope
Rate of Change
Formulas
Slope formula: m = (change in y) / (change in x)
Theorems
Proportionality Theorem
Linearity Theorem
Suitable Grade Level
Grades 6-8
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