Instructions for Use Students will graph each equation using a graphing calculator. Then they will look at the graphs at the bottom of the page to find their answer. Be careful: there are incorrect answers mixed in with the correct ones! Students will eliminate the Zurich locations associated with their graph.

Solving the Case

When they have finished all 15 questions, students will have eliminated all but one location and will discover where Ms. Mann is hiding.

A P.I. R2 Mini-Mystery

Backstory

Ray Radicand is a Private Investigator and owner of an agency he calls R2 P.I. The Case of Ms. Mann’s Briefcase is the fourth and final part of a larger case. In the first activity (Solving Quadratics by Factoring) Ray and his assistants discovered that Ms. Mann had murdered Mr. Quad.

During the search of her home following this discovering, Ray and his team found Ms. Mann’s locked briefcase. Fortunately he also found some clues to the combination. In the second activity, students solve quadratic equations by completing the square and then solve a logic puzzle to unlock the briefcase.

In the briefcase, Ray discovered a message which students decoded by using the Quadratic Formula. This message led the student sleuths to Zurich where they are searching numerous famous locations to find the murderess Ms. Mann so she can be brought to justice.

Who Killed Mr. Quad: Solving Quadratics

by Factoring

The Case of Ms. Mann’s Briefcase:

Solving Quadratics by Completing the Square

The Message in the Briefcase: Solving Quadratics with the Quadratic Formula

NAME DATE PERIOD

Where is Ms. Mann Hiding?

Rea

dy-M

ade

Res

ourc

es, 2

014

Directions: Graph each answer below; then find the matching graph below to eliminate the famous places in Zurich that Ms. Mann could be hiding.

1. 푦 = 2푥 − 6푥 − 8 2. 푦 = 2푥 + 2푥 − 24 3. 푦 = 푥 + 10푥 + 19

4. 푦 = −푥 − 4푥 + 7 5. 푦 = 3푥 + 2푥 − 2 6. 푦 = 푥 + 6푥 − 7

7. 푦 = 푥 − 3푥 − 18 8. 푦 = 푥 − 4푥 + 5 9. 푦 = −2푥 − 2푥 − 5

10. 푦 = 3푥 + 6푥 11. 푦 = −2푥 − 3푥 + 4 12. 푦 = 3푥 + 2푥 − 8

13. 푦 = −2푥 − 4푥 − 1 14. 푦 = 2푥 − 6푥 + 3 15. 푦 = 2푥 − 3푥 − 7

Lindenhofplatz

Grossmunster

Urania Observatory

Bahnhofstrasse

Bad Au-Hongg Opera House

Bellevue Square

Uetilberg Mountain

Aldstadt

Seebad Enge

Rietberg Museum

St. Peterskirche

Zurich Zoo

UBS Polybahn

Fraumunster

Museum of Art

Ms. Mann is hiding in the __________________________________

NAME DATE PERIOD

Where is Ms. Mann Hiding?

Rea

dy-M

ade

Res

ourc

es, 2

014

v

Directions: Graph each answer below; then find the matching graph below to eliminate the famous places in Zurich that Ms. Mann could be hiding.

1. 푦 = 2푥 − 6푥 − 8 Opera House

2. 푦 = 2푥 + 2푥 − 24 Bahnhofstrasse

3. 푦 = 푥 + 10푥 + 19 Lindenhofplatz

4. 푦 = −푥 − 4푥 + 7 Rietberg Museum

5. 푦 = 3푥 + 2푥 − 2 Aldstadt

6. 푦 = 푥 + 6푥 − 7 Fraumunster

7. 푦 = 푥 − 3푥 − 18 Uetilberg Mountain

8. 푦 = 푥 − 4푥 + 5 Grossmunster

9. 푦 = −2푥 − 2푥 − 5 Museum of Art

10. 푦 = 3푥 + 6푥 UBS Polybahn

11. 푦 = −2푥 − 3푥 + 4 Zurich Zoo

12. 푦 = 3푥 + 2푥 − 8 Bad Au Hongg

13. 푦 = −2푥 − 4푥 − 1 Urania Observatory

14. 푦 = 2푥 − 6푥 + 3 Seebad Enge

15. 푦 = 2푥 − 3푥 − 7 St. Peterskirche

Lindenhofplatz

Grossmunster

Urania Observatory

Bahnhofstrasse

Bad Au-Hongg Opera House

Bellevue Square

Uetilberg Mountain

Aldstadt Seebad Enge

Rietberg Museum

St. Peterskirche

Zurich Zoo UBS Polybahn

Fraumunster

Museum of Art

Ms. Mann is hiding in the ___________________________

Bellevue Square