Question

For the graphed exponential equation, calculate the average rate of change from x = −4 to x = 1.

Answer 1

@imqwerty

Answer 2

\[avg = \frac{ f(b) - f(a) }{ b - a }\], which is change in y / change in x and rise/run. You can use the values given by the graph to determine the slope between two points.

Answer 3

still dont get it

Answer 4

its not -1/3

Answer 5

-4/5?

Answer 6

@welshfella

Answer 7

what is the value of a and b ?

these are the 2 values of x which are stated in the question, b being the second value

get it?

Answer 8

-4 and 1?

Answer 9

sorry im not understanding

Answer 10

right but which is a and which is b ?

Answer 11

a is -4 b is 1?

Answer 12

right b is the highest value

we go from -4 to 1


so the bottom part of Lord_Box 's formula comes to 1 - (-4) = what?

Answer 13

5

Answer 14

b - a = 1 -(-4) = 1 + 4 = 5

Answer 15

yeah

Answer 16

so -4/5?

Answer 17

Now f(a) and f(b) are the corresponding 'y' values of x = -4 and x = 1

from the graph what is the value of f(a) when x = -4?

Answer 18

0?

Answer 19

right
you are getting it now and f(b) = -4


so answer is (-4 - 0) / 5= -4/5

Answer 20

thank you, can you help witha couple more?

Answer 21

i cant I have to go right now