Functions

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

• Domain

• Function

• Independent

• Range

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

• Dependent

• Domain

• Piecewise

• Range

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

A graph of a relation is a function if any _____________ drawn passing through the graph intersects it at exactly one point.

• horizontal line

• slant

• point

• vertical line

Which of the following is not true about function?

• Function is composed of two quantities where one depends on the other.

• One-to-one correspondence is a function.

• Many-to-one correspondence is a function.

• One-to-many correspondence is a function.

In a relation, what do you call the y values or the output?

• Domain

• Independent

• Piecewise

• Range

Given w(n) = n −1, find the value of the function if w = -1.

• -2

• -1

• 0

• 1

 $Evaluate:f(x)=−x−1,find\ f\left(a^2\right)$  

•  $-a^2-1$  

•  $a^2-1$  

• -1

• 1

Given f(x) = ll x ll - 3, find f(9.3)

• 6

• 6.3

• 9

• 12.3

k(a) = l a l − 2 , find k(−9)

• -11

• -7

• 7

• 11