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SAT
Course: SAT > Unit 10
Lesson 3: Problem solving and data analysis- Ratios, rates, and proportions — Basic example
- Ratios, rates, and proportions — Harder example
- Percents — Basic example
- Percents — Harder example
- Units — Basic example
- Units — Harder example
- Table data — Basic example
- Table data — Harder example
- Scatterplots — Basic example
- Scatterplots — Harder example
- Key features of graphs — Basic example
- Key features of graphs — Harder example
- Linear and exponential growth — Basic example
- Linear and exponential growth — Harder example
- Data inferences — Basic example
- Data inferences — Harder example
- Center, spread, and shape of distributions — Basic example
- Center, spread, and shape of distributions — Harder example
- Data collection and conclusions — Basic example
- Data collection and conclusions — Harder example
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Key features of graphs — Basic example
Watch Sal work through a basic Key features of graphs problem.
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So was this graph more of an exponential graph? Instead of a linear or parabolic graph? And would 40 degrees be an asymptote, or would it eventually reach 40 degrees?(6 votes)
The graph WOULD eventually reach 40ºC. It is an exponential graph though.(2 votes)
can you provide some practice questions? I'm studying for my SAT and would like some hands-on work(5 votes)
how to solve graph question related equations(2 votes)
how was it not a linear graph(0 votes)
the rate of declining temperature is not constant, it was quick at first then it slowed down near the fridge's temperature.(4 votes)
how do you find the end behavior of a logarithm graph?(0 votes)
what exactly is this type of graph(0 votes)
How do you draw an accurate line that makes it easier to do the problem?(0 votes)- First plot the y-intercept. Next plot points in both directions from the y-intercept, using the slope.(0 votes)
Video transcript
- [Instructor] Nayeli created
a social media account for her company, and she tracks the account's
number of followers on the graph below. On what interval did
the number of followers increase the fastest? Pause this video and see
if you can figure that out. All right, so when we look at this graph, the horizontal axis is time, the vertical axis is number of followers. So, really, what we're looking for, the interval where we
have the highest slope. So we can just eyeball it right over here, and we can see that this slope right over here
is higher than this slope. And just as a reminder,
slope is rise over run. So every time you increment
your time by one month, how much did you rise? Clearly, we rose more over this interval than we did over this
interval for a month. But then this one over here
is looking really interesting, because just in one month,
we don't have a scale on the number of followers, but it's clear we got a very large rise. And so the slope is the
largest right over here, larger than any other point on this graph. So that's between two and three months. So I am liking this choice right over here.