Parallel and Perpendicular equations

Front

What is the slope of two parallel lines?

Back

The slope of two parallel lines is the same.

Front

What is the equation of a line parallel to y = 2x + 3 with a y-intercept of (0, 4)?

Back

y = 2x + 4

Front

What type of lines intersect at a right angle?

Back

Perpendicular lines intersect at a right angle.

Front

What is the slope relationship of two perpendicular lines?

Back

The slopes of two perpendicular lines are opposite reciprocals.

Front

If a line has a slope of 4, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it is -1/4.

Front

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

Back

The general form of the equation of a line is Ax + By + C = 0.

Front

How do you find the slope from two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

Front

What is the y-intercept of the line y = 3x + 5?

Back

The y-intercept is 5.

Front

What is the slope of the line represented by the equation y = -2x + 1?

Back

The slope is -2.

Front

If two lines have slopes of 1/3 and -3, what can be said about their relationship?

Back

They are perpendicular lines.