<PRE><B>Question 120279</B>
Slope of y=-2
This line passes thru all points where y=-2
Two of the points are (0,-2) and (3,-2)
The slope = [-2--2]/[3-0] = 0/3 = 0
The slope of every horizontal line is zero.
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Slope of x = -3
This line passes thru all points where x = -3
Two of the points are (-3,0) and (-3,4)
The slope = [4-0]/[-3--3] = 4/0 which is undefined.
The slope of every vertical line is undefined.
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Cheers,
Stan H.</PRE>