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Question 57267: I have a graph that I will try to explain that I need to find the slope of the graphed line.
I have a graph where x-axis and y-axis meet in the middle. I have a line that is vertical left of the y line which is 4 rows over . What would that slope be?
I appreciate any help possible on this.
Thanks, Lisa
Answer by BGluvsmath(64)   (Show Source):
You can put this solution on YOUR website! The slope of a vertical line is undefined because:
The equation for the slope of a line given 2 points is (y sub 2 - y sub 1)/(x sub 2 - x sub 1). Considering the equation of this particular line is x=-4, let's take the intercept (-4,0) and (-4,2) as our points (though you get the same slope regardless of which points you use). The equation sets up as:
slope=(2-0)/(-4-(-4))
2/(-4+4)=2/0
Since it is impossible to divide by 0, the slope is undefined.
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