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  
 
+1
189
3
avatar+701 

what is graphed here 

http://prntscr.com/l28bjw

 Oct 4, 2018
 #1
avatar+101786 
+1

We have the points on the graph  (5,5)  and (20,10)

 

The slope between these points  is  [ 10 - 5 ] / [ 20 - 5] =   5 / 15  = 1/3

 

The equation of the line is

 

y  = (1/3) (x - 5)  + 5      multiply through by 3

 

3y = x - 5  + 15

 

3y  = x  + 10    subtract x from both sides

 

3y  - x   = 10   [first answer ] 

 

 

cool cool cool

 Oct 4, 2018
 #2
avatar+701 
+1

how did you get this portion 

http://prntscr.com/l28htj

 Oct 4, 2018
 #3
avatar+101786 
+1

y = (1/3) (x - 5)  + 5   multiply everything by 3

 

3y  = 3(1/3) (x - 5) + 3(5)  

 

3y  = 1 (x - 5)  + 15

 

3y  = x - 5 + 15

 

3y   =  x + 10

 

 

cool  cool cool

CPhill  Oct 4, 2018

14 Online Users

avatar