Exploring Adding and Subtracting Rational Expressions

The video tutorial covers the basics of vertical and horizontal lines, explaining their equations and characteristics. It provides practice problems for identifying line types and instructions on graphing these lines. The tutorial also discusses the slopes of vertical and horizontal lines and compares different line equations to highlight their differences.

What is the general form of a vertical line equation?

• y = a

• x = a

• y = mx + b

• x = my + b

Where does a vertical line cross the x-axis if its equation is x = 3?

• At x = 3

• At y = 3

• At y = 0

• At x = 0

What is the general form of a horizontal line equation?

• y = a

• x = my + b

• y = mx + b

• x = a

If a horizontal line crosses the y-axis at -1, what is its equation?

• y = -1

• y = 1

• x = -1

• x = 1

What is the equation of a vertical line passing through x = -2?

• y = -2

• x = -2

• y = 2

• x = 2

What is the equation of a horizontal line passing through y = 5?

• x = 5

• y = 5

• x = -5

• y = -5

What is the slope of a horizontal line?

• Negative

• Positive

• Zero

• Undefined

What is the slope of a vertical line?

• Negative

• Zero

• Undefined

• Positive

Which axis is a horizontal line parallel to?

• Z-axis

• Y-axis

• None

• X-axis

Which axis is a vertical line parallel to?

• Y-axis

• X-axis

• Z-axis

• None