Graph Analysis: Finding Maximum Water Volume at Time T

Maximum Point Identification with Graph Reading

Given a graph describing the amount of water in the container as a function of time from the time the water was turned on, in what minute was there the greatest amount of water in the container?

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Given a graph describing the amount of water in the container as a function of time from the time the water was turned on, in what minute was there the greatest amount of water in the container?

Weather222444666888101010121212141414161616181818202020222222242424262626282828303030Amount of water202020404040606060808080100100100120120120140140140160160160180180180200200200220220220240240240260260260280280280300300300000CCC111

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Analyze the given graph to identify the peak point.
  • Step 2: Determine the time (in minutes) corresponding to this peak point.

Now, let's work through each step:
Step 1: Upon examining the graph carefully, we identify a clear peak at a particular point. This point represents the maximum amount of water in the container.
Step 2: The peak on the graph is located at approximately the 18-minute mark on the time axis. This represents the moment when the water volume is at its maximum.

Therefore, the greatest amount of water in the container occurs at 1818 minutes.

3

Final Answer

18

Key Points to Remember

Essential concepts to master this topic
  • Peak Identification: Find the highest point on the curve showing maximum value
  • Technique: Trace horizontally from peak to time axis: peak at 18 minutes
  • Check: Verify no other point on graph is higher than identified peak ✓

Common Mistakes

Avoid these frequent errors
  • Reading the y-value instead of x-value at maximum
    Don't read the water amount (280) as the time = wrong answer! The question asks WHEN (time), not HOW MUCH (amount). Always read the x-coordinate (time) at the peak point, which is 18 minutes.

Practice Quiz

Test your knowledge with interactive questions

Given the following graph, determine whether function is constant

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FAQ

Everything you need to know about this question

How do I know which point is the maximum on the graph?

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Look for the highest point on the curve! The maximum is where the graph reaches its peak before going down. In this graph, it's clearly at the 18-minute mark where the line reaches about 280 units of water.

What if there are multiple high points on the graph?

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Find the absolute maximum - the single highest point overall. If two points are equally high, the question would specify which one to choose. In this graph, there's only one clear peak.

Should I read the exact value or estimate from the graph?

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For the time axis, read the exact minute where the peak occurs. The graph shows clear markings at 18 minutes. For the water amount, you can estimate, but the question only asks for the time.

Why does the graph go up and then down?

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This represents a real-world scenario where water fills up to a maximum, then decreases (perhaps due to drainage, evaporation, or the tap being turned off). The peak shows the moment of maximum water.

What does the x-axis and y-axis represent?

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  • X-axis (horizontal): Time in minutes from when water was turned on
  • Y-axis (vertical): Amount of water in the container

Always read the correct axis for what the question is asking!

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