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IsTim
 4 years ago
Determine the exact equation of the function given: f(x)=k(x1)(x+2) and goes thru point (2,8)
IsTim
 4 years ago
Determine the exact equation of the function given: f(x)=k(x1)(x+2) and goes thru point (2,8)

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IsTim
 4 years ago
Best ResponseYou've already chosen the best response.0I'm looking through my notes, and it gives info SO close to what I want...

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.08 =k(21)(2+2) 8 = k (1)(4) 8= 4k k=2

IsTim
 4 years ago
Best ResponseYou've already chosen the best response.0So all I do was sub in values? Ok. Thank you.

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.0Yes. You may need to multiply out the factors and express the answer in polynomial form. Check the directions.

IsTim
 4 years ago
Best ResponseYou've already chosen the best response.0"Multiply out"? And what do you mean by polynomial form?

Chris
 4 years ago
Best ResponseYou've already chosen the best response.1He's saying that polynormial form is http://en.wikipedia.org/wiki/Polynomial  e.g. ax^2 + bx + c  basically the opposite of factored. really depends on how they want the final format of the equation

Chris
 4 years ago
Best ResponseYou've already chosen the best response.1e.g. if k = 2, then one way to write the equation is f(x) = 2(x1)(x+2)

Chris
 4 years ago
Best ResponseYou've already chosen the best response.1another way is to FOIL (x1)(x+2) to put the final equation in polynomial form

Chris
 4 years ago
Best ResponseYou've already chosen the best response.1Basically it's up to convention  they are equivalent
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