anonymous
  • anonymous
math question help
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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anonymous
  • anonymous
shoot
anonymous
  • anonymous
is the line up or down for graphing y = –2x² + 2
anonymous
  • anonymous
1) this is a quadratic and cannot be a "line". It is a "curve"

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anonymous
  • anonymous
thats what i mean sorry is the curve up or down
anonymous
  • anonymous
2) we then check the coefficient of the highest power of "x"
anonymous
  • anonymous
i put it as down but im not sure
anonymous
  • anonymous
it will first increase from -infinity, then reach a maximum and then decrease
anonymous
  • anonymous
okay i get that
anonymous
  • anonymous
so does it look like this then
anonymous
  • anonymous
|dw:1364413141919:dw|
anonymous
  • anonymous
sorry i couldn't draw it
anonymous
  • anonymous
looks like this. I cannot see your picture.
anonymous
  • anonymous
oh sorry it was a pic that looked like the one you drew except the curve was under the x axis is that correct?
anonymous
  • anonymous
yep. So, it first increases and then decreases. did you study derivatives?
anonymous
  • anonymous
yes and thank you :)
anonymous
  • anonymous
curve is under the x axis and downward.. at x = 0 it peak
anonymous
  • anonymous
at y =0 you can find x value and at x= 0 find value of y...
anonymous
  • anonymous
if you had studied derivatives, this becomes way easier
anonymous
  • anonymous
just a little bit and thank you again all for helping

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