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## Get ready for AP® Calculus

### Unit 5: Lesson 3

Interpreting features of graphs

# Graph interpretation word problem: temperature

When a function models a real-world context, we can learn a lot about the content from the function's graph. In this video, we consider a graph that models temperature over time.

## Want to join the conversation?

• Does temperature actually vary like in the example, something like a sin wave?
• No, temperature can vary as weirdly as you want but it can often gradually fluctuate, sort of like a sine wave.
• Man, there is barely any questions but I have a problem. How does the y-intercept's statement is -3celuis at the beginning of the day?
• The y-intercept represents a point when the domain (x) is 0. So when no time, which the x value represents, has passed, that means that the time passed is 0, and therefore x is 0. Therefore, the y-intercept is representing that when time is 0, the temperature is -3 degrees Celsius.
• What is the difference between relative and global max point?
• Is there a complete summary on Graph Interpretation itself?