<PRE><B>Question 365252</B>
(-5,7),(-5,3)
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You may have been asked to find the equation 
of the line that passes thru those two points.
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The slope is (7-3)/(-5--5) = 4/0, which is undefined.
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If your daughter will plot the two points and will
draw a line thru them she may see that the equation
of the line is x = -5 because the line passes thru
ALL the points where x = -5.
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Cheers,
Stan H.</PRE>