Parallel and Perpendicular

Are these lines perpendicular?
y = 4x + 2
y = (-1/4)x + 12

• YES

• NO

Slopes of parallel lines are...

• opposite reciprocals.

• opposites.

• the same.

• always 7.

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• identical.

• always 7.

What is the slope of a line perpendicular to -10/3

• -10/3

• 10/3

• 3/10

• -3/10

• line s

• line t

• line m

• line l

• line s

• line t

• line m

• line l

• line s

• line t

• line m

• line l

• line l

• line m

• line s

• line t

• line l

• line m

• line s

• line t

Choose the most precise answer: These roads are

• Intersecting

• Perpendicular

• Parallel