Horizontal and Vertical Lines

Front

What is a horizontal line?

Back

A horizontal line is a straight line that runs from left to right across the page and has a slope of 0. It can be represented by an equation of the form y = c, where c is a constant.

Front

What is a vertical line?

Back

A vertical line is a straight line that runs up and down the page and has an undefined slope. It can be represented by an equation of the form x = c, where c is a constant.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

How do you determine if an equation represents a horizontal line?

Back

An equation represents a horizontal line if it is in the form y = c, where c is a constant.

Front

How do you determine if an equation represents a vertical line?

Back

An equation represents a vertical line if it is in the form x = c, where c is a constant.

Front

What is the slope formula?

Back

The slope (m) between two points (x1, y1) and (x2, y2) is calculated using the formula: m = (y2 - y1) / (x2 - x1).

Front

Calculate the slope of the line passing through (2, 3) and (5, 7).

Back

The slope is (7 - 3) / (5 - 2) = 4 / 3.

Front

What is the slope of the line that passes through (19, -16) and (-7, -15)?

Back

The slope is -1/26.

Front

What is the slope of the line that passes through (19, 3) and (20, 3)?

Back

The slope is 0.