kanalonga
kanalonga kanalonga
  • 13-10-2018
  • Mathematics
contestada

A parabola's focus is at (0,-2) and its directrix is at y=2. What is the equation for the parabola?

Respuesta :

altavistard
altavistard altavistard
  • 13-10-2018

Answer:

y = -8x

Step-by-step explanation:

Because the y-coordinate of the focus is -2, it's below the directrix, y = 2.  The vertex is at (0,0) Thus, the graph of the parabola opens down.  The appropriate equation is y = 4px, where p = -2.  Thus, we have y = 4(-2)x, or y = -8x.


Answer Link

Otras preguntas

Any number that is divisible by 3 is also divisible by 9.Find a counterexample to show that the conjecture is false.18274548
2(n-3)=4n+1 this sucks not knowing the answer
factoring 12m^2n^2-8mn+1=
what city is located 60 north 25 east
Write this statement as a conditional in if-then form: All triangles have three sides. A) If a figure is a triangle, then all triangles have three sides.B) If a
Given the inequalities y > 5x-8 and y >3x+4, find the point that satisfies both inequalities
Question: 35/8 ( write as mixed number ) Please help me very very quickly!!!!!!!!!!!!!!!!!!!
A storage tank shaped Like a rectangular prism is being manufactured to hold 100,000 cubic feet of natural gas. It has a length of 10 feet and a width of 25 fee
Solve the system of equations.3x+3y+6z=33x+2y+6z=74x+4y+7z=4
among the qualities listed on the human relations scale, the most important one for the building new relationship is?