Linear

In this lesson, you will learn how to solve a linear system by using the elimination method. In the elimination method you either add or subtract the equations to get an equation in one variable.

Lines are parallel if they are always the same distance apart, will never meet and they also point in the same direction. In elementary geometry, the word perpendicular describes the relationship between two lines which meet at a right angle.

In this lesson you will learn to solve linear equations using the method of solving by substitution.

Points, Lines and Planes are undefined terms in Geometry whose meaning is accepted without definition. These terms have similar meanings in Geometry as they are used in algebra, like the coordinate plane, ordered pairs and lines .

Finding derivatives of ln functions.