Question

fan and medal...rate of change f(x)=x^4+x^3-5x^2+2x-2 from x=-1 to x=1

Answer 1

@Loser66

Answer 2

@iGreen

Answer 3

Oh, we have two points:

(-1, -9) and (1, -3)

We plug these into the average rate of change formula:

\(m = \dfrac{y_2-y_1}{x_2-x_1}\)

\(m = \dfrac{-3+9}{1+1}\)

Can you finish that? Just add the top and the bottom, then divide.

Answer 4

@ladystarkzombieslayer

Answer 5

6/2

Answer 6

Yep, now divide that.

Answer 7

3/1

Answer 8

Yep, so your answer's 3..or 3/1.

Answer 9

but the possible answers where 1, -1, 5, -5

Answer 10

Hmm..

Answer 11

I didn't make any mistakes..I don't know what's wrong.

Answer 12

@Abhisar

Answer 13

@hartnn

Answer 14

What did I do wrong?

Answer 15

https://www.desmos.com/calculator/m5aju3qygr

Answer 16

^^^

That gave me (-1, -9) and (1, -3).

Answer 17

i get 3 too ...strange it is not in the choices...

Answer 18

Hmm..maybe you wrote the equation wrong? @ladystarkzombieslayer

Answer 19

oo im sooo sorry it was to be f(x)=
x^4+3x^3-5x^2+2x-2

Answer 20

Okay, that gives us (-1, -11) and (1, -1).

Plug them into the formula:

\(m = \dfrac{y_2-y_1}{x_2-x_1}\)

\(m = \dfrac{-1+11}{1+1}\)

Simplify that, and what do you get? @ladystarkzombieslayer

Answer 21

10/2= 5/1=5

Answer 22

Yep, that's your answer.