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anonymous
 one year ago
y=x214x+44 find the domain and range, and the vertex of the following parabola. Show all work? Help?
anonymous
 one year ago
y=x214x+44 find the domain and range, and the vertex of the following parabola. Show all work? Help?

This Question is Closed

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2hey do want to know how to do it or just the answer either way doesn't matter to me

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well, everytime I try to solve the vertex my teacher keeps saying its wrong. So I need help with that. Also with the whole domain and range thing.

iGreen
 one year ago
Best ResponseYou've already chosen the best response.0@laughoutloud By the looks of his username, I think he wants to learn how to do it instead of just getting an answer.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, I'd love to learn how to do it XD

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2ok, to find the vertex you need to use the formula \[\frac{ b }{ 2a }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright. So do I plug the x^2 into the 2a or the b?

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2that is going to help you find the x value

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and the 14 into the b?

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2you plug in \[\frac{ 14 }{ 2 }\]

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2yes so x = 7 now you have to find the y value.

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2What do you think you have to do?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright, so I just plug 7 into all the X values

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay... Lemme solve it real quick

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0y=(7)^2  14(7) + 44 y = 49  98 + 44 y = 49 + 44 y = 5 Is this correct?

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2yes, I got the same

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2so the vertex is?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, for the vertex it's (7, 5) right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright, how do we find the domain / range?

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2the domain is going to be all of the xvalues when this is graphed do you reach all of the x's eventually its kinda hard to explain

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2That probably doesn't make sense

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah... That's where I'm confused.

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2Ok domain is all real

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, sorry to trouble you more about the question... But sense I do all this stuff online and I'm just reading the stuff... How might I find the real numbers to explain to a teacher?

laughoutloud
 one year ago
Best ResponseYou've already chosen the best response.2sorry I'm not very good at explaining @carolinar7

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright, so.... Can you tell me how you got to your answer perhaps? @laughoutloud?
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