Parallel and perpendicular lines equations

Front

What is the slope of a line that is parallel to another line with a slope of 4?

Back

The slope is also 4.

Front

What is the slope of a line that is perpendicular to another line with a slope of 5?

Back

The slope is -1/5.

Front

Write the equation of a line in slope-intercept form that passes through the point (3, -13) and is parallel to the line y + 7 = -5(x + 1).

Back

y + 13 = -5(x - 3).

Front

Write the equation of a line in slope-intercept form that passes through the point (3, 8) and is perpendicular to the line y - 2 = -5(x - 4).

Back

y - 8 = (1/5)(x - 3).

Front

What is the general form of the equation of a vertical line?

Back

x = a, where a is the x-coordinate of any point on the line.

Front

What is the general form of the equation of a horizontal line?

Back

y = b, where b is the y-coordinate of any point on the line.

Front

If two lines are parallel, what can be said about their slopes?

Back

Their slopes are equal.

Front

If two lines are perpendicular, what can be said about their slopes?

Back

The product of their slopes is -1.

Front

Write the equation of a line that is parallel to x = 5 and passes through the point (2, -3).

Back

x = 2.

Front

Write the equation of a line that is perpendicular to y = 7 and passes through the point (-8, 9).

Back

x = -8.