Question 14452: Please help me with this problem. I can't figure it out. Here is the problem:
The line through points (a,b) and (c,d) has slope m = _________,
provided a is not equal to c.
Answer by Earlsdon(6294)   (Show Source):
You can put this solution on YOUR website! You will usually see the formula for the slope of a line, when you are given two points, written as:
 Where the coordinates of the two points are: (x1, y1) and (x2, y2)
In this problem, the two given points have the coordinates: (a, b) and (c, d), so the slope formula would look like:
And, in order to not run into the undefined situation of division by zero, we cannot have a = c, otherwise you would have:
 and this is not defined.
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