Hi

Using the point-slope formula, 

(2,7) and 

(5,-2) m = 9/-3  = -3

 



  y = -3x + b  |using ordered pair Pt(2,7) to solve for b

  7 = -6 + b    b = 13

 y = -3x + 13

line slants to the left as  m < 0

m = -3/1: as y increases/decreases by 3, x increases/decreases by 1 in opposite direction

 

 

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