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The slope of the y-axis is:

AEqual to two
BEqual to zero
CNot defined
DEqual to one
Answer & Solution
Correct answer: C. Not defined
1. The y-axis is a vertical line with inclination ninety. 2. The tangent of ninety degrees is not finite. 3. So the slope of the y-axis is not defined. _Source: syllabus Mathematics, Chapter 10, Straight Lines._
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