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How do you find the slope of the line that passes through (a,2), (a,-2)?

Answer 1

Savannah Anderson

#"Undefined."#

Observing that the abscissa, i.e., the #x# -co-ords., of the

If two points are identical, the line that passes through them has to be

Vertical, i.e., parallel to the #Y#- Axis.

These lines have undefinable slopes.

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Answer 2

Isaiah Anthony

To find the slope of the line passing through two points (a, 2) and (a, -2), you can use the slope formula:

Slope (m) = (change in y) / (change in x)

Since the x-coordinates are the same (both are 'a'), the change in x is 0. Therefore, the slope of the line is undefined.

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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.