Lesson 1 : Functions – Mathematics Hub

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Welcome to Module 1 of General Mathematics

This page will guide you through imporant lessons of function. Follow the lessons step-by-step to develop a strong understanding of function and how to apply them in real-life situation

1. Function & Piecewise

2. Read the Module

3. Solve the LAS

4. Growth Mindset Focus

“You don’t have to understand everything today — you just have to improve a little more than yesterday.”

5. Take a Quiz

Test you knowledge and apply what you’ve learned through interactive quizzes and practice activities related to module 1.

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Function Quiz

Math quiz helps us to increase our knowledge

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Which of the following is not a function?

The rule that assigns the name of the school to each student

The rule that assigns to each person his/her surname.

The rule that assigns to each person his/her mobile number

The rule that assigns to each child his/her mother.

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A person can encode 1000 words in every hour of typing job. Which of the following expresses the total words W as a function of the number n of hours that the person can encode?

𝑊(𝑛)=1000+𝑛

𝑊(𝑛)=1000/𝑛

𝑊(𝑛)=1000𝑛

𝑊(𝑛)=1000−𝑛

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Which among the relations is not a function?

{(0,5) , (0,4) , (4,0) , (5,0) , (5,4)}

{(–2,5) , (0,5) , (2,5) , (4,5)}

{(–3,2) , (–2,5) , (–1,8) , (3,2)}

{(8,0) , (7,0) , (6,0) , (9,0)}

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To evaluate a function is to ______________ the variable in the function with a value from the function’s domain and compute the result.

omit

simplify

skip

substitute

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A method of determining whether or not a graph represent a function is called the ___________________.

A. Diagonal Line test

B. Horizontal Line Test

C. Zigzag Line Test

D. Vertical Line Test

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What do you call a relation where each element in the domain is related to only one value in the range by some rules?

Function

Range

Domain

Independent

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The altitude of a plane is a function of the times since take off. What is the dependent variable?

Time

Speed

Altitude

All of the above

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Which of the following correspondence is a function?
i. one to one ii. one to many
iii. many to one iv. No one

a. i only

b. ii only

c. ii and iii

d. i and ii

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In a relation, what do you call the set of x values or the input?

Piecewise

Range

Domain

Dependent

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Which of the following letters will pass the vertical line test?

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Judy is earning ₱300.00 per day for cleaning the house of Mrs. Perez and additional ₱25.00 for an hour of taking care Mrs. Perez’s child. Express the total salary (S) of Judy including the time (h) spent for taking care the child.

𝑆(ℎ)=300+25ℎ

𝑆(ℎ)=300−25ℎ

𝑆(ℎ)=300(25ℎ)

𝑆(ℎ)=300/25ℎ

Your score is

Reflection and Self-Assessment

Reflect your understanding of this topic, your quiz performance and areas where you may need more practice. Your honest responses will help guide your learning.