Chapter 1

Chapter 1

1. Vocab:

   • Input: Independent variable
   • Output: The dependent variable
   • Independent variable: Whose variation dose not depends on that of an another
   • Dependent variable: Whose value depends on that of another
   • Function: Every Input has one output
   • Domain: The set of all inputs
   • Range: Is the set of all outputs

2. Math 141 Sections 1,2, and 7.1

3. Problem Examples

   • IN 12.18.21.24.30
     • OUT 76.80.85.87.92
       • This shows every Input has one Output in a relation
   • Use the Vrtitical line test on a graph, to find out if a function passes. First Step: Analize the graph, not a scatter graph skip to step ........... Second Step: Start at the point farthest to the left. Third Step: Look up and down the Y-axis if there is two points on the same X-axis. Fourth Step: If that point dosn't share spot on the X-axis than continue down to the next point. Fith Step:
   • Four ways to represent a function: Verbally, Symbolically (as an equation), Numerically (in Table), and Graphically
     • Symbolically: y=3x^2+5
     • Verbally: No matter what "x" is you will only get one answer. it is a function