description of slope and y intercept

1. Lecture 1: Slope & Intercept

2. Y-intercept Where the line crosses the y-axis The value for x will always be 0 You figure out the value for y

3. For Example, what is the y-intercept of this line?

5. Slope Different ways to think about slope Rise over run Change in y over change in x How to figure it out? What is the y intercept? We’ll call that (x1, y1) Determine the coordinates of another point on the line We’ll call that (x2, y2) Determine the change in y (y2-y1) Determine the change in x (x2-x1) Put the change in y over the change in x That value is your slope Let’s practice with our previous graph