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2015-09-17T19:34:48+08:00

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1. m = -8/3
2. m = 1/7
3. m = -5/3
4. m = -2
5. m = 0/2

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2015-09-18T17:26:05+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
When finding for the slope the formula is:
 
     m=  \frac{y_{2} - y_{1} }{ x_{2} -  x_{1} }

1. (2, -8) and (-1, 0)
 
            0 - (-8)                                              
     m = ---------                                    m =   -8/3
            -1 - 2                                                  
             0 + 8          8
         = ---------   ⇒ ---------  
               -3            -3

2. (-5, 0) and (-1, 0)
 
       Since the y-intercepts are both the same, then the slope would be automatically 0.

          m = 0


3. (-4, 6) and (-1, 1)
 
           1 - 6
   m = ---------                                 
         -1 - (-4)                      m = -5/3
                                                   
           - 5
         -------
            3

4. (-5, 9) and (-2, 3)
 
           3 - 9
   m = --------
          -2 - (-5)                                   m = -2
 
            -6             -6
         --------     ⇒  ------   ⇒    -2
          -2 + 5          3

5. (6, 0) and (8, 0)
 
            
     Since both the y-intercepts are the same, m would be automatically 0.
 
      m = 0

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