## anonymous one year ago ALGEBRA 2 WILL GIVE MEDAL

1. anonymous

What are the amplitude, period, and midline of the function? Amplitude: 4; period: 2π; midline: y = −1 Amplitude: 8; period: 2π; midline: y = 1 Amplitude: 8; period: π; midline: y = −1 Amplitude: 4; period: π; midline: y = 1

2. anonymous

Use graph

3. anonymous

Amplitude is half of the distance between the highest lowest points. The top and bottom points are 3 and -5, respectively. The distance between is 8, so the amplitude is half of 8, or 4.

4. anonymous

so b?

5. anonymous

First, we have to determine what the other 2 are. And second, B says that the amplitude is 8, so it can't be B.

6. anonymous

Oh ok so

7. anonymous

It will be A or D

8. anonymous

D

9. anonymous

Let's figure out what the period is. The period is the distance between the point on any wave and the same point on another wave. Kinda complicated way to say it, so a simpler way is just the distance between the tops of the waves. What is the horizontal difference between the top of two of the waves?

10. anonymous

4

11. anonymous

The distance of the red line in http://prntscr.com/7p9t23

12. anonymous

3

13. anonymous

Are you sure? Look at the number on the line.

14. anonymous

Its 4

15. anonymous

The amplitude is 4, but we're talking about the period here

16. anonymous

Thats 3???

17. anonymous

OH

18. anonymous

Remember, it's horizontal distance, not vertical

19. anonymous

2!

20. anonymous

2 what? There's something after the 2.

21. anonymous

Pi

22. anonymous

Yeah, it's $$2\pi$$ So it has amplitude of 4 and period of $$2\pi$$. Which choice is that?

23. anonymous

A

24. anonymous

can u help me w a few more

25. anonymous

Correct :)

26. anonymous

Sure, I can help with a few more, just tag me in a separate question. :)