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Although all lines have the relationship that defines slope, one can argue that not all lines do have one. The exception would be vertical lines. Slope is defined as the vertical rate of change divided by the horizontal rate of change. In the case of a vertical line, there is no horizontal rate of change, and calculating slope would cause division by zero.
The closest you could come to expressing the slope of a vertical line would be ∞
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What is the slope of all lines parallel to the x-axis?
the x-axis is the horizontal line which means the slope is 0. any line parallel also has a slope of zero
What types of slope do parallel lines have?
They don't, they are parallel to each other.
The slope of a horizontal line is?
Horizontal lines have a slope of 0.
If the slope of a line is -2 What is the slope parallel to it?
-2. Slopes of parallel lines are the same. If the lines are different it is the intercedpt that is different.
What word describes the slope of the line passing through points (5 12) and (5 -13)?
It would be a undefined slope.There are four types of slope:Postive slope (when lines go uphill from left to right)Negative slope (when lines go downhill from left to right)Zero slope (when lines are horizontal)Undefined slope (when lines are vertical)
