Question

help please?

Answer 1

The average rate of change can be found if you calculate the slope of a line through the two interval endpoints...

Answer 2

how would u do that?

Answer 3

For example over x=1 to x=2 you have these two endpoints from the chart

x=1, y = g(1) = 50
x=2, y = g(2) = 20

points,
(1 , 50)
(2 , 20)

Answer 4

The average rate of change is the slope of a line through those points...

Answer 5

so from 1 to 2 its 20

Answer 6

i mean 30* and it decreases by 10

Answer 7

if the average rate of change is +30, how can the value go down?

remember it is the difference in y over the difference in x...

\[slope = \frac{ y2 - y1 }{ x2 - x1 }= \frac{ 20 - 50 }{ 2 - 1 } = -30\]

Answer 8

ohok so -30

Answer 9

and 1 to 4 is -40?

Answer 10

not quite... the two interval endpoints are

(1 , 50)
(4 , 10)

Answer 11

\[\frac{ 10 - 50 }{ 4 - 1 }=\frac{ -40 }{ 3 }\]

Answer 12

oh ok thank you! i get now

Answer 13

it now*

Answer 14

welcome