A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Find the thexcoordinate of the vertex of the function given below.
Y=(x5)(x+3)
anonymous
 one year ago
Find the thexcoordinate of the vertex of the function given below. Y=(x5)(x+3)

This Question is Open

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The easiest way to determine the coordinates of the vertex is to write the parabola in vertex form.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Meaning, \[y = a(xh)^2+k\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You will have to expand that expression, then complete the square to get the vertex form.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You will be able to read off the coordinates of the vertex (h, k) in the vertex form.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What do I fill in?? For the problem?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I listed the steps above. First, expand the expression. Then, complete the square.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't know what that means I need to find the a,h,x,k

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you first expand the expression?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What does that mean??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(x+1)(x+2) = x^2 +3x + 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Expand the expression you have, like the example above.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Check your constant term again.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You multiply (x5) by (x+3) right? You should get 5*3 = 15.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[Y = (x5)(x+3) = x^22x 15\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now, complete the square.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This means you need to factorize the expression so that you force it to become a square (x+a)^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know how to do that?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x^22x15= (x1)^2+k\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you follow what I did in that last step?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I was able to factorize it into (x1)^2 because of the 2x term.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But I will get a constant k.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Since you're only interested in the xcoordinate of the vertex, we are done. You don't need to solve for k in this question.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Match the equation that we have, with the vertex formula above.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What is the value of h?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[Y = a(xh)^2+k =(x1)^2+k\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Tell me the value of h.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Correct, that's your xcoordinate.
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.