Equations of Vertical and Horizontal Lines

Name: Equations of Vertical and Horizontal Lines
Author: Insta~Lesson

9th Grade · Math · 50 min· Hsa-ced.a.2

Lesson Preview

I can write equations for vertical and horizontal lines.

1
The slope of a horizontal line is always zero, and its equation is in the form y = a constant.
2
The slope of a vertical line is undefined, and its equation is in the form x = a constant.
3
To avoid mixing up x and y, remember that vertical lines have equations of the form x = a number, because every point on the line has the same x-coordinate.

We would love to help you present Insta~Lesson to your colleagues and administrators. Here are a few resources you can use:

A simple one-pager you can use to share Insta~Lesson.

Learn how Insta~Lesson makes life easier for teachers. This is a great resource to share at a staff meeting or PD!

Learn more about Insta~Lesson's dedicated supports for partner schools.