+0  
 
0
328
1
avatar

In 5x-5y=-20 doesnt x= -4 and y = 4?????

so if I needed to know x-y it would be -4-4 which is -8?? So why does it say in my book that x-y = -4 ???

 May 30, 2017
 #1
avatar+94511 
+2

 

5x - 5y  =  - 20     divide through by 5

 

x  -  y   =   -4

 

This is the equation of a line.......there are infinite values that make this true...for example

 

( x, y )  =   ( 0, 4)  =  ( 4, 8)  =  (-4, 0 )   .....etc.

 

 

 

cool cool cool

 May 30, 2017

25 Online Users

avatar
avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.