Question

help

Answer 1

I don't think that's right... but the method I used might not be something you have learned yet
can you tell me how you think you can do this problem? :)

Answer 2

sillybilly said c is wrong but I'm not sure how to do it then

Answer 3

people leave when Itag them

Answer 4

have you learned how to "derive" or "take the derivative" of equations yet?

Answer 5

yes and that is what confuses me

Answer 6

ok, so what did you get as the derivative? or would you like me to show you what I got?

Answer 7

show me please

Answer 8

ok so the concept is that derivative = equation of the slope
in most cases in earlier math, you only see numerical slope (like the slope of straight lines)

in these more complicated equations, the slope is also an equation (found by the derivative)

the slope of a position function = speed
the slope of a speed function = acceleration

we are only looking for the speed function so we only "take the derivative" once

Answer 9

so

-16 t^2 becomes -16(2) t = -32 t
and
40 t becomes 40(1) = 40

so the equation for the slope is -32 t + 40

does this make sense?

Answer 10

ah okay so the answer is a

Answer 11

yup

Answer 12

correct?

Answer 13

eh eh eh
not so fast

Answer 14

have you learned the power rule?

like if you take the derivative of (x^2) you get (2 x) ?

Answer 15

yes

Answer 16

cool so what did you get from taking the derivative of
x^2 - 3x + 6 ?

Answer 17

I have work with the first problem but I would have to take a picyure with my phone it's on paper

Answer 18

the derivative of x^2 - 3x + 6
is
2x - 3
is that what you got?

Answer 19

2x-3

Answer 20

yes

Answer 21

awesome and the equation is asking
what is x when
2x - 3 = 1 ?

Answer 22

oh so 2

Answer 23

correct :)

Answer 24

well crap have to erase some stuff I'll do that but you can strat on next question

Answer 25

Step 1
take the derivative of x^2 + 2x - 2

Step 2
plug in x = 1 into the above result
(this is your slope)

Step 3
plug in slope = m and point = (h, k) into point slope form
y - k = m (x - h)

Step 4
simplify to get into slope intersect form

Answer 26

2x+2
4

Answer 27

mhm so the slope is 4

Answer 28

is e the answer then

Answer 29

yup!

Answer 30

really yay

Answer 31

I'm starting to understand lol

Answer 32

:blinks: ohhhh shot
I forgot to read properly on the one before

Answer 33

cuz then C was right
y = -(1/4)x + (5/4)
because it's perpendicular

I'm sorry ;-;

Answer 34

so c is right

Answer 35

yee

Answer 36

my bad

Answer 37

it's okay lol

Answer 38

then for the most recent problem
it would be the same process of before

derivative of 2x^2 - 5x + 1

then plug in x=1 to get the slope of the Tangent line

Answer 39

-1 is slope?

Answer 40

yup!

Answer 41

yay

Answer 42

I gtg now
I've got my own pile of homework to do ;-;

Answer 43

aww well ty anyways

Answer 44

@Zarkon

Answer 45

try posting as a different thread
that way potential helpers don't get confused on which problem you're working on