This is a complete lesson plan for a double-period class on writing the equation of a line (in Slope-Intercept form) when given the coordinates for two points that the line passes through.
Students will first use the Slope Formula to find the slope of the line. They will then substitute the slope and x- and y-coordinates of one of the ordered pairs into the equation, y = mx + b, to find the y-intercept. They can use the second ordered pair to check their answers.
This lesson includes a warm-up activity (writing the equation of a line when the slope and one ordered pair is given), minilesson with guided steps through the process, examples, class activities and a worksheet for homework. Answer keys included.
Common Core Standards for 8th grade and High School Algebra and High School Functions included on the cover page.