These videos explain how to factor a polynomial using the greatest common factor, trinomials, special products and some other short-cuts like grouping factors:

Textbook´s solved exercises of the Unit:

• Vectors

• Lines

EQUATIONS OF A LINE IN THE PLANE

Slope of a line

Slope-intercept equation

Point-slope equation

Parallel and Perpendicular lines

     SLOPE "m" of a line

Homework
For each line

• Draw a parallel vector and specify its Cartesian coordinates
• Calculate the slope m of the line
• Determine the angle between the line and the horizontal

If you want to review the operations with vectors, here you have some exercises:

Solutions´ exercises of your book

Bases del concurso de monólogos científicos organizado en el IES Floridablanca