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cutiecomittee123
 one year ago
Which of these functions represents a quadratic function and why?
y=x^2+16sqrtx64
x=y^22y+4
5+3y=4
y=3x^25x+9
cutiecomittee123
 one year ago
Which of these functions represents a quadratic function and why? y=x^2+16sqrtx64 x=y^22y+4 5+3y=4 y=3x^25x+9

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campbell_st
 one year ago
Best ResponseYou've already chosen the best response.1its an interesting question... as they aren't all functions...

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0But which one is quadratic

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.1so do you know the general form for a quadratic..?

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0y=x^2+xconstant

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.1well the general form is \[y = ax^2 + bx + c\]

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0I think that the last one is the quadratic function because reading it from right to left it goes downwards in value of x until it gets to the constant

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.1so which equations fit this form...?

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.1so that's good... but what about the 2nd one...?

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0Well I thin that it doesnt work because it starts with x= and y cannot be used as a quadratic equation?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer is y=3x^25x+9

cutiecomittee123
 one year ago
Best ResponseYou've already chosen the best response.0Thanks I got it right and I understand:)

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.1well it can start with anything you like and contain and variable you like... by the problem is the 2nd one is not a function... if you graphed it you would see something like this... dw:1433713794806:dw which fails the vertical line test for a function... I'd expect you know about that
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