Equations – Parallel & Perpendicular Lines – Messenger! In this competitive activity, one student at a time acts as a messenger for their team of 2 or more students. Without running (!), they relay information about questions (posted around the room) to their teammates who then answer them. Students need to record the question letter and the answer so they can mark their work using the answer slide at the end of the activity. With the points system, students can attempt appropriate questions. You could choose posters/questions to include and delete others. (Clear plastic wallets around your classroom make it quick and easy to display posters.)

Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’

Messenger! Title Slide

10 In teams pick a messenger! It’s their job to collect questions for the rest of the team to answer. You can change who is the messenger but only one person is allowed to stand up at once and they can’t carry a pen or paper to the question! Each question is worth a different number of points! Record the question letter and your answer on a single piece of paper. After marking, the team that scores the most points wins! 10 Optional rules slide to show the class.

4 3 Question B Question A What is the equation of this line? 𝑦 𝑦 (2,4) (4,4) 𝑥 𝑥 (0,0) (0,0)

5 4 Question D Question C What is the equation of this line? 𝑦 𝑦 (2,4) (5,5) (0,3) 𝑥 𝑥 (0,0) (0,−3)

6 6 Question F Question E What is the equation of this line? 𝑦=3𝑥+4 𝑦 𝑦 𝑦=6−2𝑥 (5,3) 𝑥 𝑥 (2, −10)

5 4 B B Question H Question G These lines are perpendicular. What is the equation of B? These lines are perpendicular. What is the equation of B? B 𝑦=𝑥 B 𝑦=𝑥+3 𝑦 𝑦 𝑥 𝑥

6 6 B B Question J Question I These lines are perpendicular. What is the equation of B? These lines are perpendicular. What is the equation of B? B B 𝑦=2𝑥+1 𝑦=𝑥 𝑦 𝑦 (2,6) (4,4) 𝑥 𝑥

7 7 B B Question L Question K These lines are perpendicular. What is the equation of B? These lines are perpendicular. What is the equation of B? B 𝑦 𝑦 (3,6) (3,5) 𝑥 𝑥 𝑦= 1 2 𝑥+3 B 𝑦=3𝑥+4

9 8 B B Question N Question M These lines are perpendicular. What is the equation of B? These lines are perpendicular. What is the equation of B? 𝑦 𝑦 𝑦=− 1 3 𝑥+7 𝑦=− 1 2 𝑥+4 (𝑥, 2) (3, 𝑦) 𝑥 𝑥 B B

7 7 Question P Question O Point A is at (2, 2) Point B is at (4, 6) Find the equation of the line that is parallel to AB and passes through (0, 2). Point A is at (1, 1) Point B is at (−2, 7) Find the equation of the line that is parallel to AB and passes through (6, 2).

9 8 Question R Question Q Point A is at (2, 2) Point B is at (4, 10) Find the equation of the line that is perpendicular to AB and passes through (0, 4). Point A is at (3, 4) Point B is at (5, 10) Find the equation of the line that is perpendicular to AB and passes through (12, 5).

7 6 Question T Question S Find the equation of the line that is perpendicular to 𝑦= 1 3 𝑥+2 and passes through the point (0, 5) Find the equation of the line that is perpendicular to 𝑦=4𝑥+5 and passes through the point (16, 3)

11 10 Question V Question U Point A is at (4, 3) Point B is at (8, 11) Find the equation of the line that is perpendicular to AB and passes through the midpoint of AB. Point A is at (−3, 5) Point B is at (1, −3) Point C is the midpoint of line AB Find the equation of the line that is perpendicular to AB and passes through C.

3 4 5 6 6 7 8 9 8 9 6 7 10 11 Qu. Answer Points Qu. Answer Points Qu. 𝑦=𝑥 3 B 𝑦=2𝑥 4 C 𝑦=𝑥+3 D 𝑦=2𝑥−3 5 E 𝑦=3𝑥−12 6 F 𝑦=−2𝑥−6 G 𝑦=−𝑥 H 𝑦=3−𝑥 𝑦=−𝑥+3 Qu. Answer Points I 𝑦=8−𝑥 𝑦=−𝑥+8 6 J 𝑦=− 1 2 𝑥+7 K 𝑦=− 1 3 𝑥+7 7 L 𝑦=−2𝑥+11 M 𝑦=3𝑥−3 8 N 𝑦=2𝑥−6 9 O 𝑦=2𝑥+2 P 𝑦=−2𝑥+14 Qu. Answer Points Q 𝑦=− 1 4 𝑥+4 8 R 𝑦=− 1 3 𝑥+9 9 S 𝑦=−3𝑥+5 6 T 𝑦=− 1 4 𝑥+7 7 U 𝑦=− 1 4 𝑥+10 10 V 𝑦= 1 2 𝑥+1.5 11 Answers to display so students can mark their own or another team’s work.

tom@goteachmaths.co.uk Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk