Question 81873
The slope of a line is defined by {{{rise/run}}}, where "rise" is the change in y, and "run is the change in x. In other words, slope = (delta y)/(delta x).
In this problem, you are given 2 points through which the line passes. This is all you need to know to find the slope. Just take (delta y)/(delta x) as follows:
{{{slope=(-7-4)/(-3-(-3))}}}
{{{slope=-11/0}}}
You can see that you are getting a zero in the denominator. That is not the end of the world, it just means that this line has an infinite slope, which means that it is a vertical line. Another way to refer to the slope of a vertical line is to say that the slope is "undefined."

Good Luck,
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