Math
posted by chchch .
contains (10, 8) with undefined slope
A) x = 8
B) y = 8
C) x = 10
D) y = 10

Math 
drwls
(C) is a vertical line going through (10, 8)
(B) is a horizontal line going through (10,8)
(C) has infinite (and therefore undefined) slope. (B) has a slope of zero.
They are probably expecting (C) as the answer.
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