why slope is undefined when a line is parallel to y axis??
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slope=y1-y2/(x1-x2)
where y1,x1 ,y2and x2are the coordinate of a point on the line
anyways
when line is parallel to y axis which means x coordinate will remain same throughout
which implies that
x1-x2=0
slope=y1-y2/0
which is undefined
where y1,x1 ,y2and x2are the coordinate of a point on the line
anyways
when line is parallel to y axis which means x coordinate will remain same throughout
which implies that
x1-x2=0
slope=y1-y2/0
which is undefined
Shree99:
x1 and y1 are the coordinats on line or on x axis??
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