anonymous
  • anonymous
Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4. A.f(x) = −16x2 B.f(x) = 16x2 C.f(x) = −one sixteenth x2 D.f(x) = one sixteenthx2
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@random231 @aaronq @sourwing @princeharryyy @satellite73 @DarkMoonZ @Baby_Bear69
welshfella
  • welshfella
the general form is x^2 = 4ay where a = the y coordinate of the focus can you work it out ?
anonymous
  • anonymous
what do i work out sorry i have no idea what to do with these types of questions

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

welshfella
  • welshfella
the focus is at (0,-4) - that is the y coordinate is - 4
welshfella
  • welshfella
x^2 = 4(-4)y
welshfella
  • welshfella
this type of parabola as the origin at (0,0) because x = 0 when y = 0 and as the focus is negative 4 opens downwards
anonymous
  • anonymous
so x^2=16y?
welshfella
  • welshfella
|dw:1439568914238:dw|
welshfella
  • welshfella
no x^2 = -16y divide both sides by -16 f(x) = y = - 1 x^2 ---- 16
welshfella
  • welshfella
C is the correct choice
anonymous
  • anonymous
so A ?
anonymous
  • anonymous
oh C
welshfella
  • welshfella
A is sixteen C is negative sixteenth
anonymous
  • anonymous
so what would be the equation to solve it ?
welshfella
  • welshfella
the equation of the curve is f(x) = - one sixteenth x^2
anonymous
  • anonymous
yea but to solve Derive the equation of the parabola with a focus at (−5, −5) and a directrix of y = 7.
welshfella
  • welshfella
|dw:1439569218616:dw|
welshfella
  • welshfella
oh thats a new question

Looking for something else?

Not the answer you are looking for? Search for more explanations.