Slopes of Horizontal and Vertical Lines

Vertical or horizontal?
Slope of 0

• vertical

• horizontal

• neither

Vertical or horizontal?
Undefined slope

• vertical

• horizontal

• neither

What is the equation of a line with an undefined slope that goes through point
(-3,5)?

• x = -3

• x = 5

• y = -3

• y = 5

What is the equation of a line with a zero slope that goes through the point
(6, 7) ?

• x = 6

• x = 7

• y = 6

• y = 7

What is the slope of all horizontal lines?

• 0

• undefined

• 1

• -1

Vertical line through (6,-7)

• x = 6

• y = 6

• x = -7

• y = -7

Identify the following as vertical, horizontal or neither

A line that has a slope of zero

• Vertical

• Horizontal

• Neither

Identify the following as vertical, horizontal or neither

A line that has an undefined slope

• Vertical

• Horizontal

• Neither

The slope of a VERTICAL line is ____________________.  

• Zero

• undefined

• negative 

• positive 

The slope of a HORIZONTAL line is ____________________.  

• zero

• undefined

• positive

• negative