Linear Equations - Super Mario Brothers

Help Mario stomp the Koopa Trooper. Select the correct values for the rise and the step, so the gradient can be entered correctly in the equation .
Instructions for use: Select the values for the rise and the step that you think will hit the target. Then press 'Make Mario Jump'. Once Luigi lands press 'Stop Mario Jump' before altering your estimates. Press 'Return Mario' to put Mario back at the start. Press 'Remove Trace' to remove the trace (this can be pressed at anytime) Press 'New Target' to get a new target to jump on. Press 'Hide Instructions' to hide the instructions.