## anonymous one year ago What is the average rate of change of f(x), represented by the graph, over the interval [-1, 1]?

1. anonymous

ill see if I can get the graph

2. anonymous

|dw:1440082674488:dw|

3. anonymous

that's what it looked like

4. anonymous

Is that y = 1/x

5. anonymous

its just a standard graph the answers to it are 2 3 5 and 6 the graphs numbered to 11

6. anonymous

I utterly have no idea what im doing I just came back to school from injury so im totally lost on the topic

7. anonymous

We need to know the y-values at -1 and 1 Average rate of change is basically the slope between the two points that's why we need the y-coordinates

8. anonymous

I guess if you can just estimate them from the graph that will give us a close enough answer

9. anonymous

i know what slope is i just don't know how to put it in this type of thing what would be your best guess i think its 5

10. anonymous

I can't really tell without knowing the coordinates. Like we have (-1, $$y_1$$) and (1, $$y_2$$). We need to know $$y_1$$ and $$y_2$$ to get slope. $\frac{ f(b)-f(a) }{ b-a }$ is just another way of writing $\frac{ y_2-y_1 }{ x_2-x_1 }$ It's the same thing, we just need to know the y's to solve. Can you post a screenshot or photo of the graph?

11. anonymous

|dw:1440083883476:dw|

12. anonymous

sorry my lunch period started ill get those points