A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
a) If P is the point (15,250) on the graph of V, find the slopes of the secant lines PQ when Q is the point on the graph with t=5,10,20,25 & 30; a) Estimate the slope of the tangent line at P by averaging the slopes of two secant lines.
 2 years ago
a) If P is the point (15,250) on the graph of V, find the slopes of the secant lines PQ when Q is the point on the graph with t=5,10,20,25 & 30; a) Estimate the slope of the tangent line at P by averaging the slopes of two secant lines.

This Question is Closed

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Have you graphed the function yet?

math456
 2 years ago
Best ResponseYou've already chosen the best response.1yea as the time increases the volume decreases!

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Okay, so where are you stuck with this? You have two points P = (15,250) and Q = (20, 111). Use the slope formula and find the slope of PQ

math456
 2 years ago
Best ResponseYou've already chosen the best response.1y did u picked the time 20?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Because it is the next point P = (15,250) Q = (20,111) R = (25,28) Get it?

math456
 2 years ago
Best ResponseYou've already chosen the best response.1okay so i thought we hv to pick the closest point to 15

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1I will assume you have calculated it correctly

math456
 2 years ago
Best ResponseYou've already chosen the best response.1okay so how do i find the other part of this question?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Find the slope of Point PR

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Okay, now find the average of both both slopes

math456
 2 years ago
Best ResponseYou've already chosen the best response.1how? by subtracting them?

math456
 2 years ago
Best ResponseYou've already chosen the best response.1great so this the slope of the tangent line at P!

math456
 2 years ago
Best ResponseYou've already chosen the best response.1lastly how do i use a graph of the function to estimate the slope of the tangent line at P?

math456
 2 years ago
Best ResponseYou've already chosen the best response.1(This slope represents the rate at which the water is flowing form the tank after 15 mins)

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1I would use rise over run to find the slope.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1u mean delta y/delta x?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1I don't know what kind of answer they expect from you however. Yes, delta y/delta x if you want to say it that way.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1hmm in this case how can I find my delta y/x values?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1By using points on the tangent line. You have to find them for yourself.

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Actually, use the tangent line approxmation formula

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Well, that depends on how far along you are.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1like i can pick (15,250) ; (14.09, 249.99)

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1On second thought, you don't need tangent line approximation formula. You just need graph paper, really.

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Graph the points on graph paper, draw a smooth curve through them, then take a ruler and draw a tangent line through point P and through the xaxis

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Then you will have two points on the tangent line. Use those two points to find the slope

math456
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1347079627933:dw something like this

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Yeah, something like that. But use graph paper.

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Use the good kind with the smaller squares.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1okay and after doing it lets say my values are 14.009 and 249.001

math456
 2 years ago
Best ResponseYou've already chosen the best response.1i just divide them out?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1I just told you what to do. Now you have just came up with random values that don't mean anything.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1alright well thanks for your help. I appreciate it..

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Should I repeat the steps again?

math456
 2 years ago
Best ResponseYou've already chosen the best response.1no its fine thank you once i come up with the accurate values i will ask u again.!

Hero
 2 years ago
Best ResponseYou've already chosen the best response.11. Get some graph paper 2. Plot the points you were given on an xy plane 3. Draw a smooth curve through them 4. Draw a tangent line through point P and the xaxis 5. Take those two points and find the slope of the tangent line.

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1When I say draw tangent line, I mean a straight line using a ruler

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1If your line goes through the yaxis, you can use that too. Try to set up your xy axes in a way where your points are convenient to calculate.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1347081039622:dw so this is how it looks like on my graph paper

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Well, you can't really draw the line without a curve. That's why you need the other points AND the curve drawn through them first.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1347081239380:dw a lil more like this!

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1Well, I'm sure you're getting the hang of it. All you have to do is find a point on the line that goes through one of the intersections on the graph paper and use that point as your second point for a more accurate measure of slope. It's a pretty intuitive thing if you know what you're doing.

math456
 2 years ago
Best ResponseYou've already chosen the best response.1yea i am finding the values now. and i hope i found the precise one!

Hero
 2 years ago
Best ResponseYou've already chosen the best response.1You already know what it should be close to.
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.