Exploring Function Rules and Tables in Algebra 1

What is the domain in a function?

• The set of all inputs

• The set of all y-values

• The set of all dependent variables

• The set of all outputs

Which of the following is NOT a synonym for domain?

• Inputs

• X-values

• Dependent variables

• Independent variables

What is a function?

• A pairing where each input is paired with exactly one output

• A set of inputs paired with multiple outputs

• A set of outputs paired with multiple inputs

• A pairing where each output is paired with exactly one input

In the example with Mr. Brust, Mr. Kelly, and Mr. Sullivan, why is it not a function if Mr. Brust works at both K-town and Ramstein?

• Because Mr. Kelly also works at K-town

• Because Mr. Sullivan works at Ramstein

• Because one input cannot go to two different outputs

• Because Mr. Brust cannot work at two places simultaneously

Why is the mapping where 11 goes to both 0 and 9 not a function?

• Because one input cannot go to two different outputs

• Because 11 is not a valid input

• Because 0 and 9 are the same value

• Because 0 and 9 are not valid outputs

In the mapping where 4, 8, and 11 all go to 0, why is this considered a function?

• Because 0 is the only output

• Because 4, 8, and 11 are valid inputs

• Because 0 is a valid output

• Because each input goes to only one output

What is the range of the function with domain {2, 6, 10, 12} and rule y = 1/2x + 7?

• {7, 8, 10, 12}

• {2, 6, 10, 12}

• {1, 3, 5, 7}

• {8, 10, 12, 13}

If the domain is {4, 7, 10, 13} and the range is {8, 11, 14, 17}, what is the rule?

• y = x - 4

• y = x + 4

• y = x - 3

• y = x + 3

What should you do if you don't understand a practice problem?

• Skip it and move on

• Ask a teacher for help

• Ignore it

• Guess the answer

What is the purpose of the corrective assignment?

• To get extra credit

• To avoid asking teachers for help

• To practice more if you fail the mastery check

• To skip the mastery check