We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
178
1
avatar

Thank you for your time

 May 12, 2018
 #1
avatar+101872 
+1

A.

 

x^2  + y^2 - 4x -6y -12  = 0 

 

x^2  - 4x   + y^2   - 6y    = 12              complete the square on x and y

 

x^2  - 4x  + 4  + y^2  - 6y  + 9  =  12 + 4  + 9        factor the left side

 

(x -  2)^2  +  ( y - 3)^2   =  25

 

 

B.  This is a circle  centered at   ( 2, 3)   with a radius of 5

 

C. Here's the graph :  https://www.desmos.com/calculator/e4mzndmixp

 

 

cool cool cool

 May 12, 2018

11 Online Users