Graphing from point/slope

Parallel & Perpendicular

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

ReviewReview

Find the slope of the line passing through…

(4,6) and (8,9)

x y

34

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

VocabularyVocabulary

Parallel Lines: Two lines in the same plane, that have THE SAME EXACT SLOPE.

Plane: A flat surface that extends in all directions.

Perpendicular Lines: Two lines in the same plane, that have OPPOSITE RECIPROCAL SLOPES. In other words, they criss-cross each other perfectly at 90 degree angles.

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Graphing using point and slopeGraphing using point and slope

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Graphing a line using a point, and a slope…

Watch me in IXL V.12

Graphing a line using a point, and a slope…

Watch me in IXL V.12

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Graphing using point and slopeGraphing using point and slope

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Commercial Break

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Perpendicular LinesPerpendicular Lines

1

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Perpendicular vs Parallel Slopes…

Parallel = Same SlopePerpendicular = Opposite & Flip Flop Slopes

Watch me in IXL V.13

Perpendicular vs Parallel Slopes…

Parallel = Same SlopePerpendicular = Opposite & Flip Flop Slopes

Watch me in IXL V.13

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

Perpendicular LinesPerpendicular Lines

1

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

THINK / PAIR / SHARE Step 1 – Spend 20 seconds thinking silently about the

Essential Question.

Step 2 – Spend 30 seconds pairing up with your learning partner.

Step 3 – Volunteer to share your answer with the class… Volunteers will receive a Goodybuck.

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.

GIST:

Then write 3-4 sentences to answer the GIST Summary E.Q.

Essential Question: Describe the difference in slopes of two lines that are perpendicular to each other.