SOLUTION: Find the slope of the line passing through the points (4,0) and (4,5). Is it undefined, m=0, m=1 or m=5? Please help, thanks.

Question 51603: Find the slope of the line passing through the points (4,0) and (4,5). Is it undefined, m=0, m=1 or m=5? Please help, thanks.
Found 2 solutions by rchill, checkley71:
Answer by rchill(405) (Show Source): You can put this solution on YOUR website!
The slope m of a line is defined as , where (x1,y1) and (x2,y2) are two points on the line. Now we substitute the points (4,0) and (4,5) into the equation -- note it doesn't matter which ordered pair is 1 or 2, as long as you're consistent. The equation becomes , which simplifies to . Because division by zero is undefined, our slope is undefined. By definition, an undefined slope means a vertical line; a slope of 0 means a horizontal line.
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
the slope of this line is (5-0)/(4-4) or slope=5/0 or slope=0 any horizontal line has a slopeof 0
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