General Mathematics (Review)

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

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

• Piecewise

• Range

• Domain

• Dependent

Which of the following tables is NOT a representation of functions?

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In this table, what is the domain of the function?

• D: {2,4,6,8,10}

• D: {a,b,c,d,e}

• D: {1,2,3,4,5}

• y = {1,2,3,4,5,a,b,c,d,e}

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

• x = {(-1,2), (-3,4), (-1,7), (5,1)}

• g = {(-3,2), (3,1), (-3,2), (5,7)}

• h = {(6,1), (-2,3), (2, 6), (7, 2)}`

• y = {(2,3), (3,2), (-2,3), (3, -2)}

Which of the following is not true about function?

• Function is a relation.

• One-to-one correspondence is a function.

• Many-to-one correspondence is a function.

• One-to-many correspondence is a function.

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

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

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

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

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

Which of the following graphs is a function?

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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?

• S(n) = 500 + n

• S(n) = 500 / n

• S(n) = 500n

• S(n) = 500 - n

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?

• ₱55.00

• ₱175.50

• ₱125.00

• ₱170.00