Slope and Parallel and Perpendicular Lines

What describes the slope of the line shown on the graph?

• Positive

• Negative

• Zero

• Undefined

What is the slope of a line that contains the points (1, -1) and (-2, 8)?

• -3

• -7/3

• -1/3

• 1/3

What is the slope of the line shown in the graph?

• Positive

• Negative

• Zero

• Undefined

Slopes of Parallel lines are ____________?

• opposites

• reciprocals

• equal

• oppostie reciprocals

Slopes of Perpendicular lines are __________?

• Opposite

• Reciprocals

• Opposite Reciprocals

• Equal

Find the Slope of the line shown in the graph.

• -2/3

• 2/3

• -3/2

• 3/2

Are the Lines Parallel? How do you know?

Line 1 runs through the points (-6, 6) and (0, 5)

Line 2 runs through the points (0, -3) and (6, -4)

• Yes, their slopes are opposite reciprocals

• Yes, their slopes are the same

• No, their slopes are opposite reciprocals

• No, their slope are the same

Are the lines Perpendicular? How do you know?

Line 1 runs through the point (0, -1) and (7, 1)

Line 2 runs through the point (-1, 4) and (2, -5)

• Yes, their slopes are opposite reciprocals

• No, their slopes are not opposite reciprocals

• Yes, their slope are the same

• No, their slopes are not the same

Are the given lines parallel? Explain

x = -1, and y = 2

• Yes, the have the same slopes.

• Yes, their slopes are opposite reciprocals.

• No, their slopes are not the same.

• No, their slope are not opposite reciprocals

Are the given lines parallel? How do you know?

y = 1, and y = 5

• No, they do not have the same slopes.

• No, their slopes are not opposite reciprocals.

• Yes, their slopes are opposite reciprocals.

• Yes, their slopes are the same.