## anonymous one year ago Finding the average rate of change for this question?

1. anonymous

I got a table in this lesson with 3 valules (0,2) (1,-1) and (2, -6). How do I find the average rate of change from x=0 to x=2?

2. Nnesha

average rate of change = slope formula to find slope is $\huge\rm \frac{ y_2 -y_1 }{ x_2 -x_1 }$ plugin x and y values when x =0 y = ? when x=2 y = ?

3. anonymous

I have 3 points on in the table they gave me... Which are those above. Which ones do I use?

4. Nnesha

 from x=0 to x=2 use the order where x = 0 and x=2

5. anonymous

So the (0,2) and (2,-6)?

6. Nnesha

pair***

7. Nnesha

yes right :=)

8. anonymous

Alright...

9. anonymous

y2-y1 _____ x2-x1 -1-2 ____ 2-0 1 _ 2 = 0.5?

10. Nnesha

|dw:1444480522990:dw|

11. anonymous

Erm. That doesn't seem right.

12. anonymous

oh. Oops. Forgot my -6... Somehow.

13. Nnesha

hmmm y_2 means 2nd y value

14. Nnesha

ye

15. anonymous

Lemme redo it.

16. Nnesha

ok

17. anonymous

y2-y1 _____ x2-x1 -6-1 ____ 2-0 -7 _ 2 = 3.5

18. anonymous

.......I keep noticing my mistakes.... Why dont I just look before I post lol

19. Nnesha

that's fine we learn from mistakes :=)

20. anonymous

Lol that would be true. Though, I'd rather not make mistakes and just get it right the first time. XD

21. anonymous

y2-y1 _____ x2-x1 -6-2 ____ 2-0 -4 _ 2 = -2

22. anonymous

There. That seems like the answer.

23. Nnesha

-6-2 == ????

24. anonymous

I thought it was a postitive 2? Oh... I wasn't adding. Then the answer is 4.

25. anonymous

*-4.

26. Nnesha

|dw:1444480927636:dw| -6-2 isn't equal to -4 signs are the same we should add them

27. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @BetterOffLearningThenNot y2-y1 _____ x2-x1 -6-2 ____ 2-0 -4 _ 2 = -2 $$\color{blue}{\text{End of Quote}}$$ see it's -6-2 which is correct

28. anonymous

Yeah, but its not like we're multipling and we get a postitive 4. I'm not sure what you're getting at.

29. Nnesha

do you mean final answer 4 ??

30. anonymous

Well, I think I made and mistake and later found it was -4 rather than 4. Is that correct?

31. anonymous

....If i'm going through the process right.

32. Nnesha

yes right -6-2=-8 divided by 2 =- 4 :=) i thought u were saying -6-2 = 4 :D

33. anonymous

Lol, okay! Thank you for your help! :D

34. Nnesha

np, good work!