## mmend98 one year ago I am having trouble with the following attached question.

1. mmend98

2. mmend98

@ganeshie8

3. ganeshie8

look at the graph, is it increasing or decreasing ?

4. ganeshie8

|dw:1439764151072:dw|

5. mmend98

the change is negative

6. mmend98

so it is either c or d

7. ganeshie8

good, how to figure out which one it is ?

8. mmend98

I think it is D

9. mmend98

i do so it would be C. that makes sense

10. ganeshie8

Yes it is C

11. ganeshie8

**from the graph we know that (2, 10) is a solution so plugin n=$$\color{red}{2}$$ and see if you get 10

12. mmend98

thats cool how that works

13. mmend98

14. mmend98

@ganeshie8

15. ganeshie8

|dw:1439764548358:dw|

16. mmend98

amplitude is 2

17. ganeshie8

Yes

18. mmend98

the midline is 1?

19. mmend98

so B?

20. ganeshie8

Yes!

21. mmend98

yay

22. ganeshie8

good job

23. mmend98

24. ganeshie8

look at the table of h(x), whats the minimum number do you see in $$y$$ column ? |dw:1439764875596:dw|

25. mmend98

5

26. ganeshie8

good, next look at the graph of g(x), what is its minimum y value ?

27. mmend98

-4

28. ganeshie8

Excellent! and the minimum value of f(x) is -4+2 = -2

29. mmend98

so the answer would be g(x)

30. ganeshie8

|dw:1439765054402:dw|

31. ganeshie8

Yes g(x) has the smallest minimum value

32. mmend98

33. ganeshie8

maximum is 33-20 = ?

34. mmend98

13 ? really?

35. mmend98

thats all u have to do?

36. ganeshie8

Yes because the maximum value of $$\sin(anything)$$ is $$1$$ therefore the maximum value of $$33\sin(t)$$ is $$33$$, we need to subtract $$20$$ because our function is $$33\sin(t)-20$$

37. mmend98

so the answer would be c? it makes sense thats just so simple

38. ganeshie8

Yes