Parallel & Perpendicular lines FLASHCARD

Front

What is the slope of a line parallel to y = 5x - 10?

Back

The slope is 5.

Front

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

Back

The slope is 1/2.

Front

What are the slopes of perpendicular lines?

Back

They are opposite reciprocals.

Front

What are the slopes of parallel lines?

Back

They are the same.

Front

Write the equation of the line PARALLEL to y = 4x - 9 that passes through the point (-2, 4).

Back

y - 4 = 4(x + 2).

Front

If two lines have slopes m1 and m2, when are they parallel?

Back

m1 = m2.

Front

If two lines have slopes m1 and m2, when are they perpendicular?

Back

m1 * m2 = -1.

Front

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

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

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

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

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

Back

The slope is 3.