Summary: Vertical Line Test

Vertical Line Test-                                                                       August 17, 2011
OBJECTIVE: SWBAT UNDERSTAND AND USE COMPATIBLE NUMBERS TO ASSIST IN PROBLEM SOLVING

Today we reviewed what a function is and what a relation is. A function is when every x has its own y and a relation is a set of ordered pairs. We also learned about the vertical line test is. A vertical line test is when you draw a line on the graph of the relation and the vertical lines cross two different points then the relation is not a function. We also learned how to tell which relation is a function.

EXAMPLE:Which relations below are functions?

A: Names and social security numbers
B: Addresses and names
C: (2,4) (-2,5) (3,7)
D: (4,1) (4,3) (5,6)
E: (2,5) (3,5) (4,5)