RELATION AND FUNCTION

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.

Which of the following relations is a function?

• {(Mickey, mouse), (Bugs, Bunny), (Cosmo, Wanda)}

• {(notebook, pen), (paper, pen), (pen, paper), (pen, notebook)}

• {(January,1), (February,1), (March,1), (January,2), (February,2)}

• {(trashcan, trash), (broom case, broomstick), (broom case, dustpan)}

Which of the following is an example of a one-to-one relation?

• {(1, 1), (1, -1), (2, 2), (2, -2), (3, 3), (3, -3)}

• {(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6), (1, 7)}

• {(q, 3), (r,3), (s, 5), (t,4), (u, 4), (v, 4), (w,5), (x, 5)}

• {(a, p), (b, q), (c, r), (d, s), (e, t), (f, u), (g, w), (h, x)}

Which of the following set of ordered pairs shows one-to-one relation?

• {(1, 2), (1, 3), (1, 4)}

• {(1, 2), (3, 4), (3, -3)}

• {(1, -1), (2, -2), (3, -3)}

• {(1, -1), (1, -2), (1, -3)}

Maria, a Grade 8 student loves to share snacks to her closest friends as shown through these pairs: {(Ana, sandwich), (Juan, sandwich), (Peter, sandwich)}, which of the following correspondence best describes the given set?

• Many-to-Many

• One-to-Many

• Many-to-One

• One-to-One

Which of the following sets of ordered pairs represents a function?

• { (0,2), (1, 3), (2, 4), (3, 5), (4, 6) }

• { (0,1), (0, 2), (0, 3), (0, 4), (0,5 ) }

• { (0,2), (1, 3), (1, 4), (3, 5), (3, 6) }

• { (0,0), (4, 2), (4,-2), (9,3 ),(9,-3) }

Which of the following ordered pairs shows one-to-one correspondence?

• {(Christian, Row 1),(Johny, Row 2),(Charles, Row 2)}

• {(pencil, paper),(ball pen, paper),(ink, printer),(ink, marker pen)}

• {(Ms.Cali, Eng.Teacher), ( Ms.Cali, EsP Teacher), ( Ms.Cali, Sci. Teacher)}

• {(English, red notebook),(Science, blue notebook),(Math, yellow notebook)}

Which of the following table of values shows a relation that is a function

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• 
• 
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Relations can be presented on the following EXCEPT.

• Graph

• Rule

• Shape

• Table

Which of the following set of ordered pairs shows one-to-one relation?

• {(1, 2), (1, 3), (1, 4)}

• {(1, 2), (3, 4), (3, -3)}

• {(1, -1), (2, -2), (3, -3)}

• . {(1, -1), (1, -2), (1, -3)}