Graphing Horizontal and Vertical Lines in 8th Grade Math

This video tutorial covers the two types of linear equations: horizontal and vertical lines. It explains the slope-intercept form and how to graph these lines. The video introduces the HOY and VUX mnemonics to help remember the properties of horizontal and vertical lines. It provides examples of graphing equations with both x and y values, as well as those with only x or y, emphasizing the differences in their slopes and intercepts.

What do the equations of horizontal and vertical lines look like?

• y = a number and x = a number

• y = mx + b

• x = my + b

• y = mx + c

In the equation y = 1/4x - 2, where do you start plotting the graph?

• Two units above the origin

• Four units to the right of the origin

• At the origin

• Two units below the origin

What is the slope of the line represented by the equation y = -2x + 5?

• -2

• 2

• -5

• 5

What does the equation y = 3 represent on a graph?

• A point at (0, 3)

• A diagonal line with slope 3

• A horizontal line at y = 3

• A vertical line at y = 3

What is the slope of a horizontal line?

• Undefined

• Zero

• Positive

• Negative

What does the equation x = 3 represent on a graph?

• A diagonal line with slope 3

• A point at (3, 0)

• A horizontal line at x = 3

• A vertical line at x = 3

What is the slope of a vertical line?

• Undefined

• Positive

• Zero

• Negative

What does the abbreviation HOY stand for?

• Horizontal, Zero slope, y = a number

• Horizontal, One slope, y = a number

• Horizontal, Zero slope, x = a number

• Horizontal, Undefined slope, y = a number

What does the abbreviation VUX stand for?

• Vertical, Undefined slope, y = a number

• Vertical, Undefined slope, x = a number

• Vertical, One slope, x = a number

• Vertical, Zero slope, x = a number

If you have the equation y = 2x, what type of line will it be?

• Horizontal

• Vertical

• Diagonal

• Undefined