Mathematics 8

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 relation.

Which of the following relations is a function?

• A. {(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)}

Angel, 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

• One-to-One

• Many-to-One

Given the mapping at the right, which set of ordered pairs described the mappings of elements in set A to B?

• {(-2, -3),(-1,-1),(0,-1),(1,1),(2,1)}

• {(-2,-3),(-1,-3),(0,-1),(1,1),(2,1)}

• {(-2,3),(-1,-1),(0,-1),(1,1),(2,-1)}

• {(2,-3),(-1, -3),(0,-1),(1,1),(2, -3)}

Archie and her mother went to the market to buy fish for their picnic. The fish that they want to buy has a price of ₱300 per kilo. If and her mother will buy 5 kilos of fish, how much will they pay?

• ₱1,550

• ₱1,600

• ₱1,500

• ₱1,250

Which of the following mapping illustrates a many-to-one correspondence?

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