Question 135624
find the equation for the line going through. 
(2,3), (5,11) 
slope = (11-3)/(5-2) = 8/3
Form: y = mx+b
you know x,y, and m; solve for b
3 = (8/3)2 + b
3 = 16/3 + b
b = -7/3
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y = (8/3)x -(7/3
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and (3,1) (3, -1) 
slope = (-1-1)/(3-3) = -2/0 which is undefined
The equation is x=3
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Cheers,
Stan H.