A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 one year ago
Write the equation of the parabola in vertex form.
A.
y = (x + 1)2 + 3
B.
y = (x + 1)2 – 3
C.
y = (x – 1)2 – 3
D.
y = (x – 1)2 + 3
 one year ago
Write the equation of the parabola in vertex form. A. y = (x + 1)2 + 3 B. y = (x + 1)2 – 3 C. y = (x – 1)2 – 3 D. y = (x – 1)2 + 3

This Question is Closed

selenamalter
 one year ago
Best ResponseYou've already chosen the best response.0thats the wrong graph

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1Do you see the zeroes at 1 and 4? The vertex is right in the middle of them: x = 1½. Also the ycoordinate of the vertex seems to be 7½. I cannot match it...

selenamalter
 one year ago
Best ResponseYou've already chosen the best response.0hold on let me get the other one

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1What are the coordinates of the vertex?

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1No, you have to go to the left and down... I get (1, 3).

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1So if you look at the answer options, that doesn't help much: these same numbers are in every option, sometimes + sometimes ... You can find the right one by comparing this graph with that of the "father of all parabolas": y = x². That one has a vertex in (0, 0). So if x = 0, you get the other coodrinate of the vertex (also 0). In your parabola, you have to set x = 1 to get the vertex, so you get (x+1)² in the formula.

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1That would be all, if the ycoordinate of the vertex was at y = 0, just as the vertex of y = x². But this isn't the case, it lies 3 units lower! OK, just subtract 3 from the formula, result: y = (x+1)²3

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1You added 3, which would make the parabola go 3 units up, instead of down...

selenamalter
 one year ago
Best ResponseYou've already chosen the best response.0okay, thank so much for all your help :D

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.1YW! Hope you understand the principle of moving the parabola.
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.