+0  
 
0
38
4
avatar+383 

Which equation is a point slope form equation for line AB?

points are (-2,6) (2,-2)

 

I got  

y−2=−2(x+2)?

hoiuu  Oct 23, 2018
edited by hoiuu  Oct 23, 2018
 #1
avatar+90969 
+2

I believe you made a slight sign error, hoiuu.....check this out

 

Slope =   [ -2 - 6 ]  / [  2 - - 2 ]   =   -8/4    = -2

 

So......using  ( 2, -2)  we have

 

( y - [-2 ] )  =  -2 ( x -  2 )  =

 

( y + 2) =  -2 ( x -  2)

 

 

cool cool cool

CPhill  Oct 23, 2018
 #2
avatar+383 
+1

Yes, but these were the options i have  

 

y−2=−2(x+6)

y−2=2(x+2)

y−2=−2(x+2)

y−6=−2(x+2)

hoiuu  Oct 23, 2018
 #3
avatar+90969 
+2

OK...we can use either point....using  ( -2. 6)  we have

 

( y - 6)   = -2 ( x -  -2 )

 

( y - 6) =  -2 (x + 2) ⇒   last choice

 

They were just trying to trick you......!!!!!

 

 

cool cool cool

CPhill  Oct 23, 2018

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