Geom IM U6L9,10,&11 -Parallel and Perpendicular LInes

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 determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope.

Front

How do you determine if two lines are perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the slope of a line given by the equation y = mx + b?

Back

The slope (m) is the coefficient of x in the equation.

Front

If a line has a slope of 2, what is the slope of a line perpendicular to it?

Back

The slope of a line perpendicular to it would be -1/2.

Front

What is the slope of the line y = -2/3x + 4?

Back

The slope is -2/3.

Front

Are the lines y = 3/2x - 14 and -6x + 4y = -12 parallel, perpendicular, or neither?

Back

They are parallel.

Front

Are the lines y = -5/3x + 14 and -5x + 3y = -9 parallel, perpendicular, or neither?

Back

They are neither.

Front

What is the slope of a line perpendicular to y = 2x - 7?

Back

The slope is -1/2.