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Determine the domain and the range of the function

f(x) = x^2 - 8x

 

tysm ~

 Jan 15, 2021
 #1
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x*2   -  8x

 

The domain is all real numbers  

 

This is a parabola that turns upward

 

The  x coordinate of the  vertex =   8/ (2*1)   8/2  = 4

 

And the y coordinateof the vertex  is   4^2 - 8(4)  =  16 -32 =  -16

 

So...the range is [-16,  infinity )

 

 

cool cool cool

 Jan 15, 2021

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