Characteristics of Lines

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the equation of a horizontal line?

Back

The equation of a horizontal line can be expressed as y = c, where c is a constant.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

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

Back

The slopes of two perpendicular lines are negative reciprocals of each other.

Front

If the slope of a line is m = 5/8, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to m = 5/8 is -8/5.

Front

How do you find the x-intercept of a line given its equation?

Back

To find the x-intercept, set y = 0 and solve for x.

Front

Back

The x-intercept is (-5, 0).

Front

Back

The x-intercept is (-4/5, 0).

Front

What does a slope of 1 indicate about a line?

Back

A slope of 1 indicates that the line rises one unit vertically for every one unit it moves horizontally.

Front

What does a slope of -1 indicate about a line?

Back

A slope of -1 indicates that the line falls one unit vertically for every one unit it moves horizontally.