+0

# Help.

0
80
1
+1146

Help.

NotSoSmart  Sep 27, 2017
Sort:

#1
+79654
+1

(-2, 15)   ( 9 , - 18)

Slope  =    [   -18  - 15  ]                    -33

___________     =            ____       =    - 3

[ 9   -   -2     ]                     11

To  write the equation  using   ( -2 , 15)    we have

y  = slope ( x  -  x coordinate)   +  y coordinate

y  =  -3 ( x -  -2 )   + 15          simplify

y  = -3 ( x + 2)  +  15      subtract 15 from both sides

y - 15 =  -3(x + 2)

Note, NSS....either point could have been used....it would have produced a different looking equation....but....when both were simplified, they would be EXACTLY the same.....!!!

Poiint   ( 8 , -8)  slope 3

y  = slope ( x  - given x coordinate)  +  (given y coordinate)

y  = 3  ( x  - 8)   +  ( - 8)    simplify

y =   3 ( x - 8)   - 8     add 8 to both sides

y +  8   =  3 ( x - 8)

CPhill  Sep 27, 2017

### 8 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details