Horizontal and Vertical Lines LIVE

Horizontal and Vertical Lines

Objective: Identify equations and graphs of horizontal and vertical lines.

Multiple Select

Which statements are true?

• Vertical lines go up and down.

• Vertical Lines go left and right.

• Horizontal lines go up and down.

• Horizontal lines go left and right.

VERTICAL LINE

Vertical Lines go up and down

EVERY vertical line has the same equation: x = #.

The line to the right is x = 3.

VERTICAL LINE

EVERY point on a vertical line has the same x-coordinate.

The line graphed is x = 3.

EVERY point on that line is (3,#)

You can see some examples labeled on the graph.

Multiple Choice

Which graph is x = 7?

Multiple Select

Which points lie on the line x = -4?

• (-4,0)

• (-4,7)

• (5,-4)

• (0,-4)

• (-9,-4)

ANSWERS

Points with -4 as the x-coordinate

(-4,0)

(-4,7)

Multiple Select

Which points lie on the line x = 9?

• (9,0)

• (9,5)

• (9,-3)

• (0,9)

• (-9,9)

Multiple Select

Choose ALL the correct statements that describe the line x = 5.

• The line passes through (0,5).

• The line passes through (5,0).

• The line is parallel to the x-axis.

• The line is parallel to the y-axis.

HORIZONTAL LINE

Horizontal Lines go left and right

EVERY horizontal line has the same equation: y = #.

The line to the right is y = -4.

HORIZONTAL LINE

EVERY point on a horizontal line has the same y-coordinate.

The line graphed is y = -4.

EVERY point on that line is (#,-4)

You can see some examples labeled on the graph.

Multiple Choice

Which graph is y = 7?

Multiple Select

Which points lie on the line y = -31?

• (100,-31)

• (16,-31)

• (-31,-31)

• (-31,0)

• (-31,8)

Multiple Select

Which points lie on the line y = -8?

• (0,-8)

• (116,-8)

• (-8.8)

• (-8,0)

• (-8,88)

Multiple Select

Choose ALL the correct statements that describe the line y = -5.

• The line passes through (0,-5).

• The line passes through (-5,0).

• The line is parallel to the x-axis.

• The line is parallel to the y-axis.