Use your mouse to "drag" the red point labeled "slope" to change the slope of the line.
Use your mouse to "drag" the red point labeled "intercept" to change the y-intercept of the line.
Answer the following questions about the green points labeled P,Q,R, and S.
(First guess then move the line to see if you are correct).
The slope of the line through which pair of points is 1?
The slope of the line through which pair of points is -1?
The slope of the line through which pair of points is 0.25?