A slope describes the direction and measures how steep a line on a graph is. In a linear equation, y=mx+b, m represents the slope. There are 4 directions of a line: horizontal (parallel to the x-axis), vertical (parallel to the y-axis), increasing or decreasing. The direction is represented as 0 on a linear equation if horizontal and if vertical, the slope is undefined as there is no slope. This lecture also covers the slopes of parallel and perpendicular lines. Parallel lines have the same slope while the product of slopes of two perpendicular lines is equal to -1.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.