How do you find the slope & y-intercept of the equation #x = –9#?

Answer 1

The slope is undefined.
There is no #y-#intercept.

The straight line equation is #y=mx + c# in slope (#m#) and y-intercept (#c#) form.

In this instance, a vertical straight line parallel to the #y-#axis passes through the point #(-9,0)# at #x=-9#.

A vertical line has an undefined slope by definition, and it lacks a #y-intercept because it will never intersect the #y-#axis.

This is evident from the #x=-9# graph below.

x + 0.0001y = -9 [-16.02, 16.02, -8.02, 8]} graph

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Answer 2

Eva Abramson

The equation x = -9 represents a vertical line parallel to the y-axis. Since it's a vertical line, its slope is undefined, and its y-intercept does not exist.

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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.

How do you find the slope &amp; y-intercept of the equation #x = –9#?

How do you find the slope & y-intercept of the equation #x = –9#?