anonymous
  • anonymous
y=-(x+2)(x-5) Find the domain,range,axis of symmetry, and vertex
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous

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anonymous
  • anonymous
anonymous
  • anonymous
Sorry i gtg
anonymous
  • anonymous
okay :(
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
Give me a couple more minutes and i will find it for you :]
anonymous
  • anonymous
kk:)
anonymous
  • anonymous
My parents can't make up there minds i have to go i am so sorry... :[
anonymous
  • anonymous
it's fine! Byee! And thanks again
anonymous
  • anonymous
:]
Vocaloid
  • Vocaloid
y=-(x+2)(x-5) is a downward facing parabola with x-intercepts (-2) and (5)
Vocaloid
  • Vocaloid
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anonymous
  • anonymous
http://www.algebra.com/algebra/homework/complex/Complex_Numbers.faq.question.164513.html will this help?
anonymous
  • anonymous
Thanks:) So what would be the range?
Vocaloid
  • Vocaloid
to find range, first find the axis of symmetry, which is the x value exactly between -2 and 5
anonymous
  • anonymous
would that be 1,9
Vocaloid
  • Vocaloid
not quite what number is exactly halfway between -2 and 5?
anonymous
  • anonymous
1 and 2
Vocaloid
  • Vocaloid
nope, 3 is closer to 5 than -2
Vocaloid
  • Vocaloid
what number is exactly in the middle of 1 and 2?
anonymous
  • anonymous
1/2
Vocaloid
  • Vocaloid
not quite, try one more time
anonymous
  • anonymous
1.5
Vocaloid
  • Vocaloid
right, so our axis of symmetry is x = 1.5 now, to find our range, find f(x) when x = 1.5
anonymous
  • anonymous
by pluggin in?
Vocaloid
  • Vocaloid
yes
anonymous
  • anonymous
-1(3.5)(-3.5)
Vocaloid
  • Vocaloid
multiply all that out and we get...?
anonymous
  • anonymous
12.25
Vocaloid
  • Vocaloid
so our range is (-infinity,12.25]
Vocaloid
  • Vocaloid
our axis of symmetry is x = 1.5
anonymous
  • anonymous
yayy! Thanks so much:)
Vocaloid
  • Vocaloid
and our vertex is (1.5,12.25)

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