Algebra 1 Section 1.7 Identify functions and their parts In a function the input may not be repeated. The set of inputs is called the domain. The set of outputs is called the range. A function is a rule that shows a relationship between two quantities called the input and the output.
Name the domain and range. Is it a function?
Functions can also be expressed as a rule or an equation. Make an input-output table for the function. y = 2x + 3 Use 1, 2, and 3 for the domain.
Page 47 example 2 The total pressure under water equals the surface pressure plus the water pressure.
Ways to illustrate a function 1. input-output mapping 2. input-output table 3. rule-equation 4. graph 5. verbal description
Assignment Page 49 Problems 10-24 even, 26-32 all, 37-41 all, 47,50,54