0
To make it simple, it is because the line has no slope. There is no angle, it is just a straight line. When the line is completely vertical, it means that there is no y-intercept, because the line will never cross the y-intercept. So, because the slope is not there, then it shall be "0" (zero)
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Earn +20 ptsQ: Why is the slope zero for a horizontal line?
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What is the equation of a line with a slope of zero?
A horizontal line has a slope of zero. The equation of a horizontal line is y = a.
Does a horizontal line has a slope of zero?
Yes, it is true; slope zero is no slope.
Lines always have a slope of zero.?
Horizontal lines always have a slope of zero. (i.e completely flat, level surfaces have a slope of zero). However a line does not have to have a slope of zero in order to be a line.
What is the difference between a line that has a zero slope and a line that has a undefined slope?
zero is horizontal, undefined is vertical
What kinda line has a slope of zero?
a horizontal line - kinda
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