Parallel & Perpendicular Slopes FLASHCARD

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet. They have the same slope.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees). The slopes of perpendicular lines are negative reciprocals of each other.

Front

How do you find the slope of a line given two points?

Back

The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1).

Front

What is the slope of a line parallel to the line y = 3x + 2?

Back

The slope of a line parallel to y = 3x + 2 is 3.

Front

What is the slope of a line perpendicular to the line y = 4x - 1?

Back

The slope of a line perpendicular to y = 4x - 1 is -1/4.

Front

If two lines have the same slope, what can we say about them?

Back

If two lines have the same slope, they are parallel.

Front

If the slopes of two lines are negative reciprocals, what can we say about them?

Back

If the slopes of two lines are negative reciprocals, they are perpendicular.

Front

Write the equation of a line parallel to y = -2x + 5 that passes through the point (1, 3).

Back

The equation is y = -2x + 5.

Front

Determine if the lines with points (1, 2) and (3, 4) and (0, 0) and (2, 2) are parallel, perpendicular, or neither.

Back

The lines are parallel.

Front

What is the slope of the line passing through the points (2, 3) and (4, 7)?

Back

The slope is 2.