## anonymous one year ago The graph of f(x) = 2x + 1 is shown below. Explain how to find the average rate of change between x = 1 and x = 3.

1. anonymous

@Hero

2. anonymous

@pooja195

3. anonymous

@M4thM1nd

4. anonymous

5. anonymous

@jim_thompson5910

6. anonymous

first find the value of function for 1 and 3 .then use this formula average rate of change=(y2-y1)/(x2-x1)

7. anonymous

so that's it?

8. anonymous

@amirreza1870

9. Jack1

yep, thats it

10. anonymous

thanks guys

11. Jack1

if not: y = mx + c m is the gradient... which is the rate of change

12. Jack1

in this case: y = 2x + 1 so c = 1 and m = 2...

13. anonymous

alright thanks

14. Jack1

np

15. anonymous

The average rate of change is given by: $a.r.c. = \frac{f(x_1)-f(x_0)}{x_1-x_0}$

16. anonymous

just plug in the values