Geometry B Flashcardizz 3.5 - 3.7

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).

Front

How do you determine if two lines are parallel using their slopes?

Back

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

Front

How do you determine if two lines are perpendicular using their slopes?

Back

If the product of the slopes of two lines is -1, the lines are perpendicular.

Front

Given points J(-10, -7) and K(-4, 1), what is the slope of line JK?

Back

The slope (m) is calculated as (y2 - y1) / (x2 - x1) = (1 - (-7)) / (-4 - (-10)) = 8 / 6 = 4/3.

Front

Given points L(-3, 2) and M(-6, -2), what is the slope of line LM?

Back

The slope (m) is calculated as (y2 - y1) / (x2 - x1) = (-2 - 2) / (-6 - (-3)) = -4 / -3 = 4/3.

Front

If two lines have slopes of 4/3, what can you conclude about them?

Back

The lines are parallel.

Front

What is the equation of a line in slope-intercept form?

Back

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

Front

How do you find the y-intercept of a line given its equation?

Back

Set x = 0 in the equation and solve for y.

Front

What does it mean for two lines to be neither parallel nor perpendicular?

Back

It means the lines intersect at an angle that is not 90 degrees and do not have the same slope.