Equation and Gradient of a Straight Line - Digital Math Lesson CCSS HSF-LE.A.3This is an interactive lesson for learners in learners in 9th -10th grades. In this lesson, learners are able to use the form y = mx + c to identify parallel {and perpendicular} lines; find the equation of the line through 2 given points, or through 1 point with a given gradient.The lesson can be used for whole-class teaching by teachers and at home by learners.Lots of drag-and-drop activities with instant feedback. Co