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How do you find the slope perpendicular to #y=-7#?

Answer 1

Any x = line will be perpendicular to y = -7, x=3, x = 0 x =-3 etc...
The y line is horizontal and x lines are vertical and therefore will be perpendicular to each other.

The line y = -7 is a horizontal line running through the y axis at -7.

This line has a slope of 0 because it does not rise.
Any x = line will run vertically on the coordinate grid and therefore be perpendicular to the y = -7 line. These vertical lines have no slope as they have no run.

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Answer 2

Jace Anderson

The slope perpendicular to ( y = -7 ) is 0 because the original line is horizontal.

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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.