0
because, when you go, lets say, (2,3), and the line is on the 2, you change the second number, not the 2, but the 3.
The slope of a line is the ratio of rise over run. On a vertical line you have an infinite rise over zero run. Your slope would be infinity/0. As you know, you cannot divide by 0, so the slop is undefined.
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Do horizontal lines have an undefined slope?
No. The slope of a horizontal line is zero. The slope of a vertical line is undefined.
Can the graph of a linear functions have undefined slope?
Yes. For example, the lines x=7, x=-1, and x=145 all have an undefined slope; they are all vertical.
The slope of a vertical line?
Undefined.
Do vertical lines always have an slope?
The slope of a vertical line is undefined. It either slants straight up or straight down-- you can not say which. The formula for slope does not work in this case because the denominator is zero.
Does every line have a slope intercept equation?
No. Vertical lines and horizontal lines have undefined and 0 slopes. Undefined could be any number, so the answer is No. Good luck with your Apex :)
