Rectangular coordinates are what many people use when graphing coordinates. Given the point (a,b) you shift over 'a' spaces on the x-axis and then down or up 'b' spaces on the y-axis.
Polar Coordinates are identical points as rectangular coordinates, only they are expressed with regards to 'r' and as the point (r,). The following is a image of the connection between rectangular and polar coordinates:

**x = r cosq, y = r sinq**

Therefore the polar point: (r,q) could be converted to
rectangular coordinates like this:

**( r cosq, r sinq ) ð ( x,
y )**

**Graphing
Points on a Coordinate Plane**

To graph points on the coordinate plane, you need to
understand the organization of the coordinate plane and understand what to do
with those (x, y) coordinates. If you want to learn how to graph points on the
coordinate plane, simply follow these steps.

**Understand the axes
from the coordinate plane. When you are graphing a point on the coordinate
plane, you may graph it in (x, y) type.**

**Understand
the quadrants on the coordinate plane. Keep in mind that a graph provides four
quadrants. You will have to know which quadrant the plane is in. **