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What is the slope of the line that passes through (2, 5) and (–1, 5)?

Answer 1

The slope of a line through #(2,5)# and #(-1,5)# is 0

Since the value of #y# is a constant, the "change in y" is #0# and the slope, which is defined as the "change in y" divided by the "change in x", is equal to zero.

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Answer 2

Eli Assouline

The slope of the line passing through (2, 5) and (-1, 5) is 0. Since both points have the same y-coordinate, the line is horizontal, and the slope of a horizontal line is always 0.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.