anonymous
  • anonymous
What is the line of symmetry for the parabola whose equation is y = 3x2 + 24x - 1?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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dumbcow
  • dumbcow
for y = ax^2 +bx+c line of symmetry = -b/(2a)
anonymous
  • anonymous
thank you
dumbcow
  • dumbcow
yw

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anonymous
  • anonymous
i have answer choises
anonymous
  • anonymous
x = -8 x = -6 x = -4
welshfella
  • welshfella
compare your equation with the general form and you'll be able to see the values of a,b and c y = ax^2 + bx + c y = 3x^2 + 24x - 1
welshfella
  • welshfella
can you see what a and b are?
anonymous
  • anonymous
no... :(
welshfella
  • welshfella
what number lies directly below a ?
welshfella
  • welshfella
|dw:1435250578539:dw|
anonymous
  • anonymous
oooooh.
anonymous
  • anonymous
thank you...
welshfella
  • welshfella
and then the one below b is 24 so you plug these into x = -b/ (2a) x = -24 / 2*3 work that out and you have the answer
welshfella
  • welshfella
yw

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