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QR Challenge: Finding slope & y-intercept with coordinates

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. find the slope for (0,4) and (12,12)m = 2/3
2. find the slope for (-2,7) and (2,27)m = 5
3. find the slope for (-8,-5) and (2,-10)m = -3/2
4. find the slope for (9,1) and (4,5)m = -4/5
5. find the slope for (11,12) and (8,6)m = 2
6. find the b if the slope is 3 and a coordinate is (3,0)b = -9
7. find the b if the slope is 2/3 and a coordinate is (6,10)b = 6
8. find the b if the slope is -2 and a coordinate is (-5,8)b = -2
9. find the b if the slope is -5/2 and a coordinate is (-4,12)b = 2
10. find the b if the slope is 1/2 and a coordinate is (8,2)b = -2
11. Write an equation of the line if the slope is 6 and the Y-intercept is 4.y = 6x + 4
12. Write an equation of the line if the slope is 2/3 and the Y-intercept is -1.y = 2/3x - 1
13. Write an equation of the line if the slope is 1/2 and the Y-intercept is 12.y = 1/2x + 12
14. Write an equation of the line if the slope is -7/5 and the Y-intercept is -8.y = -7/5x - 8
15. Write an equation of the line if the slope is 3/2 and the Y-intercept is 0.y = 3/2x
16. Find the b and the equation of a line if the slope is 2 and a coordinate is (3,1)b = -5 y = 2x - 5
17. Find the b and the equation of a line if the slope is -1/2 and a coordinate is (-6,4)b = 1 y = -1/2x + 1
18. Find the b and the equation of a line if the slope is 7/2 and a coordinate is (10,8)b = -27 y = 7/2x - 27
19. Find the b and the equation of a line if the slope is -2/5 and a coordinate is (5,5) b = 7 y = -2/5x + 7
20. Find the b and the equation of a line if the slope is 12 and a coordinate is (1/2,8) b = 2 y = 12x + 2

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_slope_for_(0,4)_and_(12,12)

Question 1 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_slope_for_(-2,7)_and_(2,27)

Question 2 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_slope_for_(-8,-5)_and_(2,-10)

Question 3 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_slope_for_(9,1)_and_(4,5)

Question 4 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_slope_for_(11,12)_and_(8,6)

Question 5 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_b_if_the_slope_is_3_and_a_coordinate_is_(3,0)

Question 6 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_b_if_the_slope_is_2/3_and_a_coordinate_is_(6,10)

Question 7 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_b_if_the_slope_is_-2_and_a_coordinate_is_(-5,8)

Question 8 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_b_if_the_slope_is_-5/2_and_a_coordinate_is_(-4,12)

Question 9 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=find_the_b_if_the_slope_is_1/2_and_a_coordinate_is_(8,2)

Question 10 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_an_equation_of_the_line_if_the_slope_is_6_and_the_Y-intercept_is_4.

Question 11 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_an_equation_of_the_line_if_the_slope_is_2/3_and_the_Y-intercept_is_-1.

Question 12 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_an_equation_of_the_line_if_the_slope_is_1/2_and_the_Y-intercept_is_12.

Question 13 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_an_equation_of_the_line_if_the_slope_is_-7/5_and_the_Y-intercept_is_-8.

Question 14 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Write_an_equation_of_the_line_if_the_slope_is_3/2_and_the_Y-intercept_is_0.

Question 15 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_b_and_the_equation_of_a_line_if_the_slope_is_2_and_a_coordinate_is_(3,1)

Question 16 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_b_and_the_equation_of_a_line_if_the_slope_is_-1/2_and_a_coordinate_is_(-6,4)

Question 17 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_b_and_the_equation_of_a_line_if_the_slope_is_7/2_and_a_coordinate_is_(10,8)

Question 18 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_b_and_the_equation_of_a_line_if_the_slope_is_-2/5_and_a_coordinate_is_(5,5)

Question 19 (of 20)

 


Finding slope & y-intercept with coordinates: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find_the_b_and_the_equation_of_a_line_if_the_slope_is_12_and_a_coordinate_is_(1/2,8)

Question 20 (of 20)