+0  
 
+1
57
2
avatar+293 

can somebody help need as soon as possible please.

 Dec 3, 2020
 #1
avatar+114592 
+2

(-3,-2)    (7,-2)       this will  be  a parabola that opens sideways

 

2a  =the distance between  the  vertices

2a = (7 - -3)  = 10

a  = 5   .....   a^2  = 25

 

2c = the distance between the foci  

2c = (12 - -8)

2c  = 20

c =10   .....     c^2  =100    

 

c^2 - a^2  =  b^2 

b^2  =  10^2 - 5^2  =  75

 

The center is  [ (-3 + 7)/2 , -2 ]  =  [ 4/2, -2]=  (2, -2)  =(h , k)

 

The equation  is

 

( x -h)^2         (y - k)^2

_______  -    ________  =      1

    a^2                b^2

 

( x - 2)^2        ( x + 2)^2

_______  -   _________  =    1

    25              75

 

 

Here's a graph :  https://www.desmos.com/calculator/jkmg428rig

 

 

cool cool cool

 Dec 3, 2020
 #2
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0

whoah

Guest Dec 10, 2020

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