anonymous
  • anonymous
Will a parabola always have two x intercepts?
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
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myininaya
  • myininaya
no
myininaya
  • myininaya
sometimes it won't cross the x-axis
myininaya
  • myininaya
it might cross the x-axis once like f(x)=x^2

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anonymous
  • anonymous
oh lol thx (;
anonymous
  • anonymous
oh ya i just did that on my graphing calculator
myininaya
  • myininaya
example of a parabola not crossing the x axis is f(x)=x^2+2
anonymous
  • anonymous
http://www.bbc.co.uk/schools/gcsebitesize/maths/algebra/transformationhirev1.shtml
anonymous
  • anonymous
ah i seeee
myininaya
  • myininaya
example of a parabola crossing the x-axis is f(x)=x^2-2
myininaya
  • myininaya
that last example was it crossing twice
anonymous
  • anonymous
thx u too virtus
anonymous
  • anonymous
it depends on the value of the discriminant (b^2-4*a*c), if the discriminant is positive there are two intercepts, one intercept i f the discriminant is 0 and none if the discriminant is negative.
myininaya
  • myininaya
so either 0,1, or 2 times a parabole will cross
myininaya
  • myininaya
yes!
anonymous
  • anonymous
and ya i typed all of the equations u said into my graphing calculator and got everything u said
anonymous
  • anonymous
o i seeee o.o
anonymous
  • anonymous
u ppl should be teachers or somethin lol ^^
myininaya
  • myininaya
lol

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