What is a function? How do you use the vertical line test? Learn more about functions and determine if mappings, sets of ordered pairs, tables, or graphs are functions in this short algebra video.
Need help factoring quadratics? This algebra lesson shows how to factor a quadratic with a leading coefficient that\'s not 1. See the rest of the lesson on factoring at katesmathlessons.com
How do you factor a quadratic expression? Check out this short video to learn how to set it up and test your answer to see if you\'re correct. Learn how to determine the correct signs to use, identify factors of the constant term in x^2 + bx + c and use FOIL to check different combinations.
Learn how to solve a system of equations using the elimination method. Need more help? Check out a more detailed lesson on elimination at katesmathlessons.com
Need help solving a system of linear equations? This video explains how to use the substitution method and also shows how to check your answer once you\'re done.