simple slide for math 8 regarding functions and relations representing real-life situation..

1. Prepared by: Group 1
Minerva C. Agaran
Rosemarie B. Alfarero
Ruel F. Austria
Abigail U. Caballero
Donnabelle P. Cabrera
Joseph A. Caguimbaga

2. Topic
 Key Concept of Functions
Time Frame
50 minutes

3. Outcome
 Represents real-life situations using
functions, including piece-wise functions
(M11GM-Ia-1)

4. Real Life One to One Relation

5. Familiar?
Cinderella
Glass shoes

6. How?

7. Relationship?

8. Relationship?

9. Why?

10. MATCH ME! Match the animals to their
corresponding food

11. Explain why the following scenario is a function
 Student number assigned to a particular student
 Cellphone number assigned to a particular student
 Email address assigned to a particular inbox
 Videoke
 Vending machines
 Television remote control

12. Seatwork
 Provide real world examples or scenarios that can be
expressed as a relation that is not a function
 Provide real world scenarios of a scenario that can be
modeled by a linear function.

14. Take Home Activity
 A videoke machine can be rented for P1,000.00 for three
days, but for the fourth day onwards, an additional cost of
P400 per day is added. Represent the cost of renting a
videoke machine as a piecewise function of the number of
days it is rented and plot its graph
 The fee for hiring a guide to explore a cave is P700. A guide
can only take care of a maximum of 4 persons, and
additional guides can be hired as needed. Represent the
cost of hiring guides as a piecewise function of the number
of tourists who wish to explore the cave and plot its graph.
 Think of at least 3 images or objects that may show a
piecewise function and illustrate using a graph.

15. Thank you!