GenMath L1 pre test

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

• a. Function

• b. Range

• c. Domain

• d. Independent

2. Which of the following relations is/are function/s?

• a. x = {(1,2), (3,4), (1,7), (5,1)}

• b. g = {(3,2), (2,1), (8,2), (5,7)}

• c. h = {(4,1), (2,3), (2, 6), (7, 2)}

• d. y = {(2,9), (3,4), (9,2), (6,7)}

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

• a. Piecewise

• b. Range

• c. Domain

• d. Dependent

What is the range of the function shown by the diagram?

• a. R:{3, 2, 1}

• b. R:{a, b}

• c. R:{3, 2, 1, a, b}

• d. R:{all real numbers}

5. Which of the following tables represent a function?

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6. Which of the following real-life relationships represent a function?

• a. The rule which assigns to each person the name of his aunt.

• b. The rule which assigns to each person the name of his father.

• c. The rule which assigns to each cellular phone unit to its phone number.

• d. The rule which assigns to each person a name of his pet.

7. Which of the following relations is NOT a function?

• a. The rule which assigns a capital city to each province.

• b. The rule which assigns a President to each country.

• c. The rule which assigns religion to each person.

• d. The rule which assigns tourist spot to each province.

8. A person is earning ₱500.00 per day for doing a certain job. Which of the following expresses the total salary S as a function of the number n of days that the person works?

• a. 𝑆(𝑛) = 500 + 𝑛

• b. 𝑆(𝑛) = 500/n

• c. 𝑆(𝑛) = 500𝑛

• d. 𝑆(𝑛) = 500 − n

9.Johnny was paid a fixed rate of ₱ 100 a day for working in a Computer Shop and an additional ₱5.00 for every typing job he made.How much would he pay for a 5 typing job he made for a day?

• a. ₱55.00

• b. ₱175.50

• c. ₱125.00

• d. ₱170.00

10. Johnny was paid a fixed rate of ₱ 100 a day for working in a Computer Shop and an additional ₱5.00 for every typing job he made.Find the fare function f(x) where x represents the number of typing job he made for the day.

• a. 𝑓(𝑥) = 100 + 5𝑥

• b. 𝑓(𝑥) = 100 − 5𝑥

• c. 𝑓(𝑥) = 100𝑥

• d. 𝑓(𝑥) = 100 / 5x