anonymous
  • anonymous
What is the domain and range of the quadratic equation y = –2x^2 – 32x – 126?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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experimentX
  • experimentX
the domain is set of real numbers
anonymous
  • anonymous
Do you know the range?
experimentX
  • experimentX
for range let's see ... your equation is parabolic equation facing downwards, find the vertex first ... vertex is going to be -32/4 = -8 ... so range is set of real numbers less or equal to -8

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anonymous
  • anonymous
What about this one? What are the x– and y–intercepts of the quadratic equation y = 2x^2 – 8x + 6?
experimentX
  • experimentX
the domain is same ... range is set of real numbers equal or greater than -b/2a = 2
anonymous
  • anonymous
It's asking about the x and y intercepts not domain and range lol :P
experimentX
  • experimentX
you will have 2 x intercepts, and 1 y intercept y intercept is 6, for x-intercept put y=0, you have to solve 2x^2 – 8x + 6 = 0
anonymous
  • anonymous
Thank you SO much! I finally understand :D

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