Identifying the Four Types of Slope

This lesson introduces the concept of slope, explaining how it determines the direction and steepness of a line. Students learn about the four types of slope: positive, negative, zero, and undefined. The lesson provides guidance on identifying each type by analyzing the direction of lines from left to right. A practice activity is included to reinforce the identification of slope types, preparing students for future lessons on calculating slope values.

What is the main focus of this lesson?

• Types of angles

• Types of lines

• Types of shapes

• Types of slope

How many types of slope are there?

• Four

• Five

• Three

• Two

Which direction do we read the slope of lines?

• Top to bottom

• Left to right

• Bottom to top

• Right to left

What type of slope does a line have if it is going upward from left to right?

• Undefined

• Positive

• Zero

• Negative

What type of slope does a line have if it is going downward from left to right?

• Positive

• Zero

• Negative

• Undefined

What type of slope does a perfectly horizontal line have?

• Positive

• Undefined

• Negative

• Zero

What type of slope does a perfectly vertical line have?

• Zero

• Undefined

• Negative

• Positive

If a line is not traveling up nor down, what type of slope does it have?

• Negative

• Undefined

• Positive

• Zero

Which line is described as having a negative slope in the practice activity?

• Line D

• Line A

• Line B

• Line C

Which line is described as having an undefined slope in the practice activity?

• Line C

• Line A

• Line D

• Line B