What is the average rate of change from x = -4 to x = 1?
-3
-1
0
1

Question

What is the average rate of change from x = -4 to x = 1?    	 	
-3 	
-1 	
0 	
1

jim_thompson5910 · Answer

Use this average rate of change formula
$$\Large m = \frac{f(b)-f(a)}{b-a}$$
In this case, a = -4 and b = 1.

anonymous · Answer

So does that make it 1? Or...?
Sorry, I am pretty bad at this. Still trying to get the hang of it.

anonymous · Answer

@jim_thompson5910

jim_thompson5910 · Answer

what function f(x) are you given?

anonymous · Answer

I'm sorry, I still don't understand it real well. Does this graph help?

anonymous · Answer

@jim_thompson5910

jim_thompson5910 · Answer

yes it does

jim_thompson5910 · Answer

when x = -4, what is the value of y?

anonymous · Answer

I may be completely off but is it -5? I have a feeling I am wrong, so could you help me walk through it?

jim_thompson5910 · Answer

Locate x = -4 on the x axis. Then draw a vertical line through x = -4

where does that vertical line cross the curve?

anonymous · Answer

Well if I drew a vertical line straight up and down, wouldn't it just go across 4?

jim_thompson5910 · Answer

so what point lies on the parabola when x = -4 ?

anonymous · Answer

I'm afraid I don't know... or I don't get what that is. Sorry.

jim_thompson5910 · Answer

what is the point, in the form (x,y), where the vertical line you drew and the parabola cross

jim_thompson5910 · Answer

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jim_thompson5910 · Answer

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