Reviewer in General Mathematics

Which of the statements is TRUE about function and relation?

• All relation is a function.

• Not all relation is a function

• If it is a relation then, it is a function.

• Not all function is a relation.

Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it

What is the range of the relation shown on the mapping diagram?

• R:{3, 5, 8}

• R:{-7, 11}

• R:{3, 5, 8, 12}

• R:{all real numbers}

Which relation is NOT a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}

• {(2,7), (3,7), (4,7), (5,8)}

• {(1,-5), (-1,6), (1,5), (6,-3)}

• {(3,-2), (5,-6), (7,7), (8,8)}

The function h(t) represents the height in inches of a plant after t weeks. What does the notation h(4) = 5 mean?

• After 5 week the plant is 4 inches tall

• The plant grows at a rate of 5/4 inch per week

• After 4 weeks the plant is 5 inches tall

• The plant grows at a rate of 1 inch per week

It is a rule that relates values from a set values to a second set of values.

• function

• relation

• domain

• range

A relation in which each possible input value leads to exactly one output value.

• relation

• function

• domain

• range

A function define by multiple sub-functions, where each sub-function applies to a certain interval of main function's domain.

• rational function

• one-to-one function

• inverse function

• piecewise function

• function

• not a function

• 2