Functions ordered pairs
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Functions Introduction

Functions Introduction

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Functions ordered pairs Presentation Transcript

  • 1. Aim: What is a function?Do Now: Place your contracts in the basket. Takeout a pen or pencil and a sheet of paper.You have 50 minutes to complete the diagnostic.This counts for Quiz 1. You will not be graded on correctness.Your grade will depend on how many questions you answerand how much work you show.
  • 2. Functions as a set of ordered pairs.Domain: The set of all inputs in a function, or the set of x values.Range: The set of all outputs of a function, or the set of y values.DEFINITIONS:
  • 3. A function is a relation in which eachelement of the domain is paired withexactly one element in the range.Example: {(1, 1), (2, 4), (3, 9), (4, 16)}Domain RangeMapping Diagram
  • 4. Ordered pairs on the grid....Write the ordered pairs for the relationshown in the graph.What is the Domain? (x values)What is the Range? (y values)Is this relation a function?Domain Range
  • 5. Is the relation {(1, 3), (4, 3), (-2, -4),(0, -5)}a function or not? Why or why not?Domain Range . .. .
  • 6. Function or not a function?{(0, 1), (2, 2), (0, 3), (4, 5)}Domain RangeNot a function because the same value in the domain ispaired with two different values in the range.
  • 7. Visually, a relation is a function if it passesthe vertical line test.When a vertical line is drawn if it only hits the graph ofa relation once, then the relation is a function.✔ ✖
  • 8. Are these graphs of functions?