What is the slope of a line that is vertical?

Undefined

Infinity

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Q1.

What is the slope of a line that is parallel to the x-axis?

Q2.

If a line has a slope of 1, what is the angle it makes with the x-axis?

Q3.

Determine the slope of the line through points (2, 3) and (5, 7).

Q4.

In which case is the slope of two lines equal?