A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
Help I am trying to study for a test....
given the following function f(x)=2x^24x5\
1) determine the vertex
2) list the axis of symmetry
3) calculate the yintercept
4) use the axis of symmetry and the yintercept to find an additional point on the graph
anonymous
 4 years ago
Help I am trying to study for a test.... given the following function f(x)=2x^24x5\ 1) determine the vertex 2) list the axis of symmetry 3) calculate the yintercept 4) use the axis of symmetry and the yintercept to find an additional point on the graph

This Question is Closed

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Do you know that it's a parabola?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0No that is all the study paper give us was this ? exactly like it is

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0What have you been studying in your class?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0This is the start of the class and we are having to take a pretest

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0it is college algebra or precalculus

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0well then your teacher is trying to find out what you know so just do the best you can.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0well out textbook does not really give a good explanation of anything

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0So do you want to work through this problem?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i would appreciate any help i can get

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0This is the equation of a parabola. The x coordinate of the vertex can be found using the formula x = b/2a

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0which in this case is 4/4 or 1

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Now you can find the y coordinate of the vertex by replacing x with 1 and finding f(x)

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0f(1)=7 So the vertex is (1,7)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so how do u come up with the 7

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0The axis of symmetry is the vertical line through the vertex so it is x = 1

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Did you replace x with 1 in your equation?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0\[f(x)=2(1)^24(1)5=245=29=7\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Are you reading what I write?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Now you can find the y coordinate of the vertex by replacing x with 1 and finding f(x)

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0So now we are ready for 3 which is calculate the y intercept. We can find the y intercept by letting x = 0. So replace x with 0

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Did you get 5? So the y intercept is (0,5)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok 0 cancels so i end up with 5

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0Now we're ready for the last part. And for that we need to put the info we have on a graph.

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0The axis of symmetry helps us find another point because for every point to the left of the axis, there is a corresponding point to the right.

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0So if we start at the y intercept and go 1 unit to the right, we come to the aos. If we go one more unit to the right, there will be another point.

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0So another point on the graph is (2,5)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so unless it is stated you either move to the left or right 1 point

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.0You move however many units it takes to get to the axis of symmetry.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0o ok...thank u for ur help
Ask your own question
Sign UpFind 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.