Horizontal and vertical lines BES

Front

What is the equation of a horizontal line that passes through the point (a, b)?

Back

y = b

Front

What is the slope of a horizontal line?

Back

0

Front

What is the equation of a vertical line that passes through the point (a, b)?

Back

x = a

Front

What is the slope of a vertical line?

Back

Undefined

Front

How can you identify a horizontal line from its equation?

Back

If the equation is in the form y = c, where c is a constant.

Front

How can you identify a vertical line from its equation?

Back

If the equation is in the form x = c, where c is a constant.

Front

What type of line runs parallel to the x-axis?

Back

Horizontal line

Front

What type of line runs parallel to the y-axis?

Back

Vertical line

Front

What is the relationship between the slopes of two parallel lines?

Back

They have the same slope.

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The product of their slopes is -1.