Lesson 4.3 Homework

Front

If two lines are parallel, their slopes are ____________

Back

the same

Front

Which lines are parallel?

Back

red and blue

Front

Are these lines perpendicular? y = (1/2)x + 2 and y = 2x + 13

Back

NO

Front

Write an equation of a line that passes through the point (-2,3) and is perpendicular to the line x = 4

Back

y = 3

Front

Write an equation of a line that passes through the point (2,6) and is parallel to the line y = -3

Back

y = 6

Front

Definition of parallel lines

Back

Lines that never intersect and have the same slope.

Front

Definition of perpendicular lines

Back

Lines that intersect at a right angle (90 degrees).

Front

What is the slope of a horizontal line?

Back

0

Front

What is the slope of a vertical line?

Back

Undefined

Front

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

Back

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