Showing distance between two points on a coordinate plane.
To find the equation of a circle whose center is the origin and whose radius is 3 units in length.
A perpendicular line on a coordinate plane, showing what y the y-coordinate will be.
An x=y line on a coordinate plane.
Equation of a straight line: a) parallel to y-axis, b) parallel to x-axis.
A positive slope line making a 60 degree angle with the x-axis.
A straight line through the origin of a coordinate plane.
Showing how to find points on a coordinate plane. Also, shows an example of the midpoint formula.