# Discreet Mathematics

posted by .

Part I: Suppose you are developing a statistical database in which information about professional football teams and records are stored.

Consider the following 2 sets of data that list football teams and quarterbacks:

D = {Jets, Giants, Cowboys, 49â€™ers, Patriots, Rams, Chiefs}
Q = {Tom Brady, Joe Namath, Troy Aikman, Joe Montana, Eli Manning}
1.Using D as the domain and Q as the range, show the relation between the 2 sets, with the correspondences based on which players are (or were) a member of which team(s). (Show the relation in the following forms:
◦Set of ordered pairs
◦Directional graph
2.Is the relation a function? Explain.
3.Now, use set Q as the domain, and set D as the range. Show the relation in the following forms:
◦Set of ordered pairs
◦Directional graph
4.Is the relation a function? Explain.

• Discreet Mathematics -

For the first problem the ordered pairs are (Jets, Namath) (Giants, Manning) (Cowboys, Aikman) (49ers, Montana) (Chiefs, Montana) (Patriots, Brady). The directional map is scanned and attached. This is a function. No one element of the domain matches more than one element in the range.
For the second problem, reverse the ordered pairs and find that it is no longer a function, since one element of the domain (Joe Montana) matches with two elements of the range (49ers and Chiefs).

## Similar Questions

1. ### Managerial Economics

A)Who has more monopoly power---Wal-Mart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game?
2. ### Economics - repost - assistance is appreciated

A)Who has more monopoly power---Wal-Mart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game?
3. ### Economics - anyone have any thoughts on this?

A)Who has more monopoly power---Wal-Mart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game?
4. ### MATH

There are 32 teams in the NFL. Sixteen of the teams are in the American Football Conference (AFL) and the other 16 teams are in the National Football Conference (NFC). At the beginning of the season, Julia tried to predict the teams …

There are 32 teams in the NFL. Sixteen of the teams are in the American Football Conference (AFL) and the other 16 teams are in the National Football Conference (NFC). At the beginning of the season, Julia tried to predict the teams …
6. ### MATH! URGENT!!!

There are 32 teams in the NFL. Sixteen of the teams are in the American Football Conference (AFL) and the other 16 teams are in the National Football Conference (NFC). At the beginning of the season, Julia tried to predict the teams …
7. ### math

1. There are 44 teams in the youth football league. Each team has 28 players. How many football players are there?
8. ### Math

If each 11 football teams In a college athletic conference played each of the other teams just once in a season, how many games would there be?
9. ### Programming

This question is about football matches between teams. A record of games played between teams is stored in a graph G. Each edge in the graph corresponds to a match between a pair of teams. For example, if there is an edge between vertices …
10. ### education tecnology

1)what is a database: A)a group of information in slides B)a digital collection of information that can be sorted , organized , and analyzed C)a cart that is displays data from several fields D) a group of records about one person …

More Similar Questions