anonymous
  • anonymous
Find the coordinates of the vertex for the parabola whose equation is f(x) = -4x2 + 8x - 4
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
for your x coordinate use x=-b/2a
anonymous
  • anonymous
then sub that to your y for the y coordinate
anonymous
  • anonymous
lol its multiple choice my bad haha (-2,36) (-1,-16) (2,-12) (1,0)

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anonymous
  • anonymous
.f(x) = y=-4x2 + 8x - 4 , a=-4, b=8, c=-4 x=-b/2a ==-8/2(-4)=__? then sub this to y
anonymous
  • anonymous
?
anonymous
  • anonymous
what did you get on youR x?
anonymous
  • anonymous
idk....just tell me the answer please. i gave you the multiple choices dude lol i really dont have time to sit here and figure it out .
anonymous
  • anonymous
.f(x) = y=-4x2 + 8x - 4 , a=-4, b=8, c=-4 x=-b/2a x=-8/2(-4)=__? then sub this to y......... :D x=1 yes or no? sub this to f(1)=y=__ ? hmm i got into trouble of just giving answers many times ...LOL.... :D the x is there already just find y__? ...:D

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