YOU WILL LOSE 5 POINTS FOR EVERY DAY THIS IS LATE. NO PAPERS WILL BE ACCEPTED AFTER WEDNESDAY. NO EXCUSES!
We will have a quiz/test (quest?) on this same stuff on Wednesday! So, if you put in lots of effort on your take home quiz, not only will you get a better grade, but you'll be better prepared for your "quest!"
- When I'm grading the graphs, I'm looking for 5 pieces (each @ 1 point):
- Period (so show the work on the side!)
- X Axis labeled
- Correct vertical shift (midline)
- Correct amplitude (show dotted lines for max/min values)
- Correct shape (pay attention to if it's sine or cosine, and if the graph is reflected)
- For question 3...
- First solve for b: you know the period is "3pi," so 2pi/b = 3pi. Then, cross multiply to solve for b!
- Remember, it tells you this is a cosine graph!
- This is reflected--how do we show that in the equation?
- The amplitude is 7--where do we see that in the equation?
- And lastly, there is a vertical shift "9 down"--how do we see this in the equation?
- Try questions 7 and 8! You can get up to 4 extra credit points for each!
- To write these equations (we'll talk about this Monday), FIRST, find the midline
- Remember, the midline is halfway between the max and min!
- This gives us our "d"
- Then, find the period--how long does it take to complete one cycle of the graph?
- Once we determine the period, set up an equation to solve for b (like the first bullet for question 3 above)
- Next, consider the amplitude and if the graph is reflected to determine the "a" value
- Lastly, decide if this is a sine or cosine graph!
- Write your equation!
- You got this!
Here are the questions you need to do (in case you lost yours). Use axes like the ones below for each of your 5 graphs.
Feel free to email with questions! Also, check out some videos on youtube for help with graphing! I provided some helpful links below! And most importantly, USE YOUR NOTES!
Check out these videos for help!
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