SOLUTION: I need help with this please :) equation is f(x)= x^2 - 4x - 3 a)Graph y=f(x) in the standard viewing rectangle. b)approximate the coordinates of each turning point. c)esti

Algebra ->  Algebra  -> Systems-of-equations -> SOLUTION: I need help with this please :) equation is f(x)= x^2 - 4x - 3 a)Graph y=f(x) in the standard viewing rectangle. b)approximate the coordinates of each turning point. c)esti      Log On

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Question 420620: I need help with this please :)
equation is f(x)= x^2 - 4x - 3
a)Graph y=f(x) in the standard viewing rectangle.
b)approximate the coordinates of each turning point.
c)estimate any local extrema.
Answer by stanbon(57361) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)= x^2 - 4x - 3
a)Graph y=f(x) in the standard viewing rectangle.
graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2-4x-3%29
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b)approximate the coordinates of each turning point.
The minimum occurs where x = -b/(2a) = 4/2 = 2
f(2) = 2^2-4*2-3 = -8
minimum at (2,-8)
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c)estimate any local extrema.
(2,-8)
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Cheers,
Stan H.