Relations and Functions

Front

Which of the following sets of ordered pairs is a function? Options: {(0, 1), (0, 2), (0, 3), (0, 4), (0,5)}, {(1, 2), (3, 4), (5, 6), (7, 8), (1, 9)}, {(-2, 7), (7, -2), (-3, -9), (-4, -2), (3, 2)}, none of the above

Back

{(-2, 7), (7, -2), (-3, -9), (-4, -2), (3, 2)}

Front

Which kind of relation below is a function? Options: many-to-many, one-to-many, many-to-one, all of the above

Back

many-to-one

Front

"All functions are relation, but not all relations are function". Is the statement CORRECT?

Back

Yes

Front

Which of the following statements is TRUE?

• every relation is a function
• every function is a relation
• not all functions are relations
• all functions are not relations

Back

every function is a relation

Front

Relations can be illustrated using the following, EXCEPT: rule, graph, table, shape

Back

shape

Front

What kind of relation is described by the pairs: {(Sanji, sandwich), (Nami, sandwich), (Zoro, sandwich)}? Options: many-to-many, many-to-one, one-to-many, one-to-one.

Back

many-to-one

Front

Brook rents a computer at an internet cafe. He has to pay a fixed amount of P10 and an additional cost of P15 per hour of rent time that he extended. Which is the correct mathematical model of the situation?

Back

f(x) = 15x + 10

Front

Is the rule "x = –y² + 5" a function?

Back

No

Front

5x + y = 3; Find y when x = –3.

Back

18

Front

Determine which rule below represents a function:

y = + or - √3x²/4 + 9

,

x + y = 10

,

y³ = -2x - 7

,

2x² + y² = 8

Back

x + y = 10