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?

Question

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?

anonymous · Answer

|dw:1441817819109:dw|

anonymous · Answer

@Mchilds15

mchilds15 · Answer

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

anonymous · Answer

The slope?

anonymous · Answer

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

mchilds15 · Answer

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

nnesha · Answer

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 $$\huge\rm \frac{ y_2-y_1}{ x_2-x_1 }$$

anonymous · Answer

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

nnesha · Answer

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

nnesha · Answer

can you post the screenshot of the original graph ?

anonymous · Answer

/Users/School/Desktop/01_00_73.gif

anonymous · Answer

Well that didn't work ._. One second

nnesha · Answer

try again

anonymous · Answer

attachment

anonymous · Answer

There we go! Sorry about that

nnesha · Answer

$\color{blue}{\text{Originally Posted by}}$ @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 !!

nnesha · Answer

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

anonymous · Answer

-1/2

anonymous · Answer

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

anonymous · Answer

Thank you so much for your help :)

nnesha · Answer

np :=)