Hi,

write the equation of the line determined by the given pair of points.

a. (2, -3) and 

   (-1, 1) m = -4/3  |Using the point-slope formula, 

y = (-4/3)x + b   | y = mx + b

1 = (4/3)+b, b = -1/3  |using Pt(-1,1) to solve for b.

y = (-4/3)x-1/3



b. (-3, 0) and 

   (3, 2)  m = -2/-6 = 1/3  |Using the point-slope formula, 

 y = (1/3)x + b      | y = mx + b

 0 = -1 + b, b= 1   |using Pt(-3,0) to solve for b

  y = (1/3)x + 1



 

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