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Question

The slope of a line parallel to Y-axis is zero.


  1. True

  2. False


Solution

The correct option is B

False


The slope of a line passing through points (x1,y1) and (x2,y2) is y2y1x2x1.

Given the line is parallel to Y-axis.

the points on the line has the same abscissa. I.e. x1=x2

Therefore, x2x1=0

I.e. the denominator of the expression y2y1x2x1 is zero. Hence the slope of a line parallel to Y-axis cannot be determined.

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