Question

!!

Answer 1

reaplce a with -1 and b with 2
or vice versa

that is you can do either:
\[\frac{f(2)-f(-1)}{2-(-1)} \text{ or } \frac{f(-1)-f(2)}{-1-2}\]

Answer 2

now if you want to continue you would need to know the meaning of f(x)
like the graph or the expression it is assigned to

Answer 3

impossibly for me to know if that is right or wrong since you still haven't said what f was

Answer 4

ok so f(2)=?
look on the x-axis and find x=2 there the find the y value that corresponds to x=2

Answer 5

where is the line at when x=2?

Answer 6

So, X=2 and Y=0?

Answer 7

yes so f(2)=0

Answer 8

now we need to find f(-1)

Answer 9

where is the line at when x=-1?

Answer 10

Is that Y=4?

Answer 11

yep so f(-1)=4

Answer 12

now we plug in

Answer 13

\[\frac{f(2)-f(-1)}{2-(-1)}=\frac{0-4}{2-(-1)}\]

Answer 14

0-4=?
2-(-1)=?

Answer 15

-4/3 ?

Answer 16

yep sounds awesome
and it doesn't matter if you did the other way:
\[\frac{f(-1)-f(2)}{-1-2}=\frac{4-0}{-1-2}=\frac{4}{-3}=-\frac{4}{3}\]
you still get -4/3

Answer 17

Awesome! Thanks so much for the help!

Answer 18

np