Understanding Horizontal and Vertical Lines

What is the slope of a horizontal line?

• Undefined

• Infinity

• 1

• 0

In which direction does a horizontal line run?

• Circular

• Diagonal

• Left to right

• Up and down

What is the slope of a vertical line?

• Infinity

• 1

• Undefined

• 0

In which direction does a vertical line run?

• Circular

• Diagonal

• Up and down

• Left to right

How can a vertical line be represented mathematically?

• y = a

• x = a

• x = my + b

• y = mx + b

What is the equation of a vertical line that crosses the x-axis at x = 4?

• x = 4

• y = 4

• x = 0

• y = 0

How can a horizontal line be represented mathematically?

• x = my + b

• y = a

• x = a

• y = mx + b

What is the equation of a horizontal line that crosses the y-axis at y = 3?

• y = 3

• x = 3

• y = 0

• x = 0

If a horizontal line has the equation y = -5, where does it cross the y-axis?

• At y = -5

• At y = 5

• At x = 5

• At x = -5

What remains constant for all points on a horizontal line?

• X-coordinate

• Y-coordinate

• Slope

• Direction