Equations of Vertical and Horizontal Lines
9th GradeMath50 min
aligned to Hsa-ced.a.2
Learning Objective
I can write equations for vertical and horizontal lines.
Lesson Flow
Watch Video
■ Horizontal & vertical line equations - how to find them!
maths unboxed
Guided Notes
Key concepts students will learn:
- •
The slope of a horizontal line is always zero, and its equation is in the form y = a constant.
- •
The slope of a vertical line is undefined, and its equation is in the form x = a constant.
- •
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.
Practice
11 questions • Multiple choice & Short answer
Exit Ticket
“What is the equation of a horizontal line that passes through the point (5, -2)?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
