SOLUTION: what is the slope of a line that is perpendicular to y=2

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Question 731849: what is the slope of a line that is perpendicular to y=2
Answer by lwsshak3(11628) About Me  (Show Source):
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what is the slope of a line that is perpendicular to y=2
y=2 is a horizontal line, so a line perpendicular to it is a vertical line whose slope is defined as undefined