Directing people around an area, especially a mystery scene, calls for accuracy and special consideration. Having a precise map with all the evidence and clues clearly marked is of the utmost importance. The investigator will need to develop an effective method. He/she could use directions left, right, up, and down, or north, south, east, and west. We will use a map drawn on a grid/graph. Different points will be marked off and their exact address on the graph will be written. This is called Coordinate Geometry.
The grid/graph has an X and Y Axis (see below). When charting out the location of various points on this graph always put the X symbol first, followed by a comma and then the Y symbol. Symbols may be letters and/or numbers. (3,B) see below.
____
7
6
5
4
3
2
1
____
____
____
____
____
A B C D E F
Y
Special note: In most cases the order of the coordinate pairs is very important. When you use Letters for both axis or Numbers for both axis this would be particularly important. (3,8), (B,R) You could send someone to the wrong location and be unable to find the clues.
Write the coordinates for the above shapes on the graph.
%=(4,B) 0=(6,D) []=(1,E) >=(3,F)