Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (anonymous):

Find the rate of change of the function h(x) = 4x – 3 on the interval 0 ≤ x ≤ 1. The rate of change is?

Vocaloid (vocaloid):

rate of change from x = A to x = B for h(x) is [h(B)-h(A)]/(B-A) let B = 1 and A = 0, then evaluate the expression

OpenStudy (anonymous):

how do I set this up?

Vocaloid (vocaloid):

[h(1)-h(0)]/(1-0)

OpenStudy (sparrow2):

first fing came to my was derivative but it doesn't need it ;)

OpenStudy (anonymous):

[h(1)-h(0)]/(1-0)

OpenStudy (anonymous):

was that the answer?

Vocaloid (vocaloid):

no, you still need to plug in h(1), h(0), and simplify the denominator...

Vocaloid (vocaloid):

what is h(1)?

OpenStudy (anonymous):

idk im lost please explain :(

Vocaloid (vocaloid):

h(x) = 4x-3 so what is h(1)?

OpenStudy (anonymous):

4?

Vocaloid (vocaloid):

no, please try again h(1) means let x = 1 and calculate h(x) if h(x) = 4x - 3 and x = 1 then what is h(x)?

OpenStudy (anonymous):

idk

Vocaloid (vocaloid):

h(x) = 4x - 3 and x = 1 replace "x" with "1" and solve h(x) = 4x -3

OpenStudy (anonymous):

so whats the answer and then explain please

Vocaloid (vocaloid):

x = 1 so what is 4x - 3?

OpenStudy (anonymous):

the answer is 1?

Vocaloid (vocaloid):

right, 4x - 3 = 1 when x = 1 BUT we are not done yet h(1) = 1, since h(x) = 1 when x = 1 now, we need to find h(0) if x = 0, and h(x) = 4x - 3, then what is h(x)?

OpenStudy (anonymous):

4

Vocaloid (vocaloid):

no, please try again... x = 0 4x - 3 = ?

OpenStudy (anonymous):

1

Vocaloid (vocaloid):

no, one more time please x = 0 4x - 3 = 4*(0) - 3 = ?

OpenStudy (anonymous):

3

Vocaloid (vocaloid):

what is 4*0?

OpenStudy (anonymous):

0

Vocaloid (vocaloid):

yes, so what is 4*0 - 3?

OpenStudy (anonymous):

-3

Vocaloid (vocaloid):

good, so we know that h(0) = -3 and h(1) = 1 so, what is [h(1)-h(0)]/(1-0)?

OpenStudy (anonymous):

i cant read that

Vocaloid (vocaloid):

|dw:1436822012814:dw| better?

Vocaloid (vocaloid):

evaluate the numerator first, then the denominator, then tell me what you get

OpenStudy (anonymous):

1 over 1

Vocaloid (vocaloid):

not quite, try the numerator again... h(1) = 1 h(0) = -3 h(1)-h(0) = ?

OpenStudy (anonymous):

idk

Vocaloid (vocaloid):

we know that h(1) = 1 and h(0) = -3 replace "h(1)" with 1 and "h(0)" with -3 what is h(1)-h(0)?

Vocaloid (vocaloid):

|dw:1436822235650:dw|

OpenStudy (anonymous):

-3

Vocaloid (vocaloid):

|dw:1436822597360:dw|

Vocaloid (vocaloid):

what is 1-(-3)?

OpenStudy (anonymous):

hey buddy whats thw anser please

OpenStudy (anonymous):

then explain it

OpenStudy (anonymous):

because i am really lost right now

Vocaloid (vocaloid):

|dw:1436823130155:dw|

Vocaloid (vocaloid):

our numerator is h(1) - h(0) h(1) = 1 h(0) = -3 so h(1) - h(0) = 1 - (-3) = ?

OpenStudy (anonymous):

-2

Vocaloid (vocaloid):

1 - (-3) = 1 + 3 = ?

OpenStudy (anonymous):

4

Vocaloid (vocaloid):

right, so we know that h(1) - h(0) = 4 now, can you tell me what this equals? |dw:1436823630938:dw|

OpenStudy (anonymous):

equals -3

Vocaloid (vocaloid):

not quite, please try one more time... |dw:1436824260512:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!