Question

Find the average rate of change of f:
(a) from 1 to 2
f(x)=8x^2-x

Answer 1

i got an answer of 30 but the correct answer says it's 23

Answer 2

@jim_thompson5910 could you check this for me please?

Answer 3

what are f(2) and f(1) ?

Answer 4

f(2)=30 and f(1)=0

Answer 5

f(2) = 30 is correct
f(1) = 0 is not correct

Answer 6

oh ok i know what i did wrong

Answer 7

are you available to help me with one more problem?

Answer 8

sure

Answer 9

Sketch the graph of each function.
a.) f(x)=l x l
b.) f(x)=\[\sqrt[3]{x}\]
c.)f(x)=\[\sqrt{x}\]
d.)f(x)=1/x

Answer 10

**Be sure to label atleast three points

Answer 11

do you know how to generate a point for any function?

Answer 12

i don't think i do

Answer 13

say x = 0

f(x) = |x|

f(0) = |0| ... replace every x with 0

f(0) = 0 ... take the absolute value of 0 to get 0

so one ordered pair is (0,0) since x = 0 and y = 0

Answer 14

what is another ordered pair on y = |x| ?

Answer 15

(2,2)?

Answer 16

good, what are 2 more (use one positive x value and a negative x value)

Answer 17

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

Answer 18

so if you generate enough points, you'll get an idea of what the graph looks like

Answer 19

connecting all of the points will generate the line or curve of the function

Answer 20

the more points you generate, the more accurate the graph

Answer 21

okay and that goes for all 4 functions correct?

Answer 22

yes, any function for that matter

Answer 23

okay, Thankyou!

Answer 24

you're welcome