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QR Challenge: Slope Intercept & Non-Linear

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. The set of ordered pairs {(5, 3), (–2, 1), (0, 3), (x, 6)} is a function. Which is a possible value for x?3
2. Two produce stores sell watermelons by the pound. At Jack’s store, he uses the equation y = 0.39x to calculate the cost of a watermelon that weighs x pounds. At Molly’s store, she charges $4.20 for a 12-pound watermelon and $5.25 for a 15-pound watermelon.If a watermelon weighs 20 pounds, at which store will the watermelon cost less, and by how much?Molly’s store is less expensive by $0.80.
3. Which equation does not represent a function? A. y = x + 5; B. y = x^2 + 3; C. y^2 = x + 4C
4. Mermaid Swimming Club uses the equation w = 25h + 40 to calculate the total cost, w, of h hours of swim lessons. Dolphin Swimming Club uses the table below to calculate the cost of swimming lessons for its customers. Hours (h) Total Cost (w) (2,110)(4,155)(6,200). For 7 hours of swimming lessons, which club is less expensive and by how much?Mermaid Swimming Club, by $7.50
5. Car A travels 60 miles in 2 hours. The distance car B travels is given by the equation d equal 60 t, where d is the distance, in miles, that car B travels in t hours. Based on this information, which statement is true?A.Both cars are traveling at the same rate. B.Car A travels 30 miles per hour faster than car B. C.Car B travels 30 miles per hour faster than car A. D. Car A travels at a rate of 120 miles per hour.C

 


Slope Intercept & Non-Linear: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_set_of_ordered_pairs_{(5,_3),_(–2,_1),_(0,_3),_(x,_6)}_is_a_function._Which_is_a_possible_value_for_x?

Question 1 (of 5)

 


Slope Intercept & Non-Linear: QR Challenge

https://www.classtools.net/QR/decode.php?text=Two_produce_stores_sell_watermelons_by_the_pound._At_Jack’s_store,_he_uses_the_equation_y_=_0.39x_to_calculate_the_cost_of_a_watermelon_that_weighs_x_pounds._At_Molly’s_store,_she_charges_$4.20_for_a_12-pound_watermelon_and_$5.25_for_a_15-pound_watermelon.If_a_watermelon_weighs_20_pounds,_at_which_store_will_the_watermelon_cost_less,_and_by_how_much?

Question 2 (of 5)

 


Slope Intercept & Non-Linear: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which_equation_does_not_represent_a_function?_A.__y_=_x_+_5;_B.__y_=_x^2_+_3;_C._y^2_=_x_+_4

Question 3 (of 5)

 


Slope Intercept & Non-Linear: QR Challenge

https://www.classtools.net/QR/decode.php?text=Mermaid_Swimming_Club_uses_the_equation_w_=_25h_+_40_to_calculate_the_total_cost,_w,_of_h_hours_of_swim_lessons._Dolphin_Swimming_Club_uses_the_table_below_to_calculate_the_cost_of_swimming_lessons_for_its_customers._Hours_(h) Total_Cost_(w)_(2,110)(4,155)(6,200)._For_7_hours_of_swimming_lessons,_which_club_is_less_expensive_and_by_how_much?

Question 4 (of 5)

 


Slope Intercept & Non-Linear: QR Challenge

https://www.classtools.net/QR/decode.php?text=Car_A_travels_60_miles_in_2_hours._The_distance_car_B_travels_is_given_by_the_equation_d_equal_60_t,_where_d_is_the_distance,_in_miles,_that_car_B_travels_in_t_hours._Based_on_this_information,_which_statement_is_true?A.Both_cars_are_traveling_at_the_same_rate._B.Car_A_travels_30_miles_per_hour_faster_than_car_B. C.Car_B_travels_30_miles_per_hour_faster_than_car_A.__D._Car_A_travels_at_a_rate_of_120_miles_per_hour.

Question 5 (of 5)