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xBambiX

true  is the answer


Explain: it's impossible to divide by 0, so the slope of a vertical line is always undefined. Now consider the y-axis on a graph. The y-axis is the line x = 0, and it is a vertical line. Therefore, all vertical lines, which have undefined slopes, are parallel to the y-axis.




Alejandra1007

y-axis is the line x = 0, and it is a vertical line. Therefore, all vertical lines, which have undefined slopes, are parallel to the y-axis.


hopes this helpes

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