Introduction to Slope of a Line
- Jeffrey J. Steckroth
Use the two sliders to change the appearance of the line. Watch how the slope value (m) affects the direction and steepness of the line. Adjust the value of b and see how the graph changes. Based upon the value of b and the location of the line, what should we call the value of b?
Draw a line with a slope of 1 and a b value of zero. (1) What angle does this line make with the x-axis? (2) How do the values of x and y compare at different points on the line? (3) Why do you think this is called the "identity function?"