Hi

Ordered pairs: (10,10),(15,20),(20,30),(25,40),(30,40),(35,50)

(15,20)

(10,10)  m = 10/5 = 2  and 

y = 2x + b  

10 = 2*10 + b

-10 = b    |y = 2x -10

 1) (For the 1st 4 ordered pairs y =2x-10 works)..however NOT for the last two

These ordered pairs do not have a linear relationship  

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