Modify the y-intercept of a linear equation and observe how the graph shifts vertically.
[i]Answer these open ended questions on your own or with others to form deeper math connections.[/i]
How does the graph of the line change when the [i]y[/i]-intercept changes from positive to negative? From negative to positive?
Notice the relationship between the [i]x[/i]-intercepts and [i]y[/i]-intercepts. What effect would changing the slope have on the relationship between the [i]x[/i]- and [i]y[/i]-intercepts?