+0  
 
+1
241
3
avatar+956 

Please do a. and b.

 Sep 10, 2019
 #1
avatar+24924 
0

a.   slope =   y1-y2   /   x1-x2  ==== (8-17)/(4-8) = 9/4

     using y = mx+b     m = 9/4    and one of the points

                8 = 9/4(4) + b       b = -1

         y = 9/4 x -1  

 Sep 11, 2019
 #2
avatar+24924 
0

b.  slope = 9/4      

       using point   -12 20        20 = 9/4 (-12) + b    b = 47

y = 9/4 x + 47

 Sep 11, 2019
 #3
avatar+24924 
0

Picture:

https://www.desmos.com/calculator/vxtm4fbbaa

 Sep 11, 2019

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