Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xG/ Esercizi: http://www.khanacademy.org/exercises?exid=slope_of_a_line Traduzione in Italiano del video Algebra: Slope 2 http://www.youtube.com/watch?v=Kk9IDameJXk http://www.khanacademy.org/video/algebra--slope-2?playlist=Algebra