October 22nd, 2007, 08:34 PM  #1 
Newbie Joined: May 2007 From: 8877772 Posts: 11 Thanks: 0  proofs
>write a proof to show that in the equation y=mx+b, b is the yintercept (think about what is true about a yintercept) >prove that a vertical line has no slope. (think about the coordinates of the points on a vertical line and division by 0) >prove pointslope equation (any point (X sub2, Y sub2) on the line described must satisfy the equation, and that any point satisfying the equation must be on the line described) 
October 22nd, 2007, 10:24 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,484 Thanks: 2041 
Which part are you stuck on and why?


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