## anonymous one year ago Find the average rate of change for the given function from x = -1 to x = 2 -1/2 1/2 -2 2 Help me, please?

1. anonymous

|dw:1441817819109:dw|

2. anonymous

@Mchilds15

3. mchilds15

Easy bb You know what the rate of change is right?

4. anonymous

The slope?

5. anonymous

Is the slope 1 since -1+2 is 1?

6. mchilds15

Sorry, i was off in neverland there to a minute. Yes, rate of change is the slope, and yes, i believe so

7. Nnesha

that's the difference of x's look at the graph find y value when x=-1 and when x=2 y=? then use the formula to find slope $\huge\rm \frac{ y_2-y_1}{ x_2-x_1 }$

8. anonymous

For the graph you go up 4 and over 2. Which is also 1/2. So the answer is B?

9. Nnesha

i can't say yes by just looking at that graph but line is increasing so slope would be positive if line decrease= negative slope line increase =positive slope

10. Nnesha

can you post the screenshot of the original graph ?

11. anonymous

/Users/School/Desktop/01_00_73.gif

12. anonymous

Well that didn't work ._. One second

13. Nnesha

try again

14. anonymous

15. anonymous

There we go! Sorry about that

16. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @HMT For the graph you go up 4 and over 2. Which is also 1/2. So the answer is B? $$\color{blue}{\text{End of Quote}}$$ alright so you said graph go up 4 over 2 simplify that !!

17. Nnesha

remember slope =rise over run so that's how 4 over 2 and 4/2 = what ? :D

18. anonymous

-1/2

19. anonymous

Sorry, not -1/2. I don't know why I put that. lol The answer is 2.

20. anonymous

Thank you so much for your help :)

21. Nnesha

np :=)