+0  
 
0
113
1
avatar

Which equation represents a parabola that has a focus of (0, 0)and a directrix of y = 2?

x2=−4(y−1)

x2=−4y

x2=−(y−1)

x2=−y

 Mar 3, 2021
 #1
avatar+118069 
+1

The  directrix is above  the focus.....this parabola turns  downward

 

The vertex =  (0, 1)

 

p =  1 =   distance  from vertex to  the directrix

 

The correct equation is

 

x^2  =  -4 (y  - 1)

 

See here :    https://www.desmos.com/calculator/utvou2mj4y

 

 

cool cool cool

 Mar 3, 2021

64 Online Users

avatar
avatar
avatar