# What is the slope of a line parallel to the y-axis?

Then teach the underlying concepts
Don't copy without citing sources
preview
?

Write a one sentence answer...

#### Explanation

Explain in detail...

#### Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

33
Oct 6, 2014

Parallel lines have the same slope.

Vertical lines have an undefined slope.

The $y$-axis is a vertical.

A line that is parallel to the $y$-axis also has to be vertical.

The slope of a line parallel to the $y$-axis has a slope that is undefined.

Then teach the underlying concepts
Don't copy without citing sources
preview
?

Write a one sentence answer...

#### Explanation

Explain in detail...

#### Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

10
EET-AP Share
Feb 21, 2017

A line parallel to the y-axis - a.k.a. vertical line has no slope!

#### Explanation:

Slope is defined as $r i s e$ divided by $r u n$

A line parallel to the $y$ axis is a vertical line that has no $r u n$ so it defies the definition.

A line parallel to the $x$ axis has no $r i s e$ but it follows the definition because a slope of $0$ can be calculated.

##### Just asked! See more
• 11 minutes ago
• 11 minutes ago
• 11 minutes ago
• 12 minutes ago
• 4 seconds ago
• 40 seconds ago
• A minute ago
• A minute ago
• 2 minutes ago
• 3 minutes ago
• 11 minutes ago
• 11 minutes ago
• 11 minutes ago
• 12 minutes ago