Main controls: W, A, S, D to move the blue straight line (up and down changes the m value) K to calculate the worth of k Press 1 to activate the 1:st controls Press 2 to activate the 2:nd controls Press 3 to activate the 3:rd controls 1:st controls: Arrow keys to move the green circle that start in the upper corner X to set the x1 value to the circles x Y to set the y1 value to the circles y 2:st controls: Arrow keys to move the green circle that start in the upper corner X to set the x2 value to the circles x Y to set the y2 value to the circles y 3:rd controls: Left and Right arrow keys to change which x coordinate You want to calculate the y value of M to calculate kx+m Y to get the value of y where the line, x and y meets
Math Note: I did this as a school project