Urgent help needed with Physics Graph the distance vs. time^2. Draw the best straight line through the data and calculate the slope of the line [ slope = (y2 - y1) / (x2 - x1) ] using two points that are not data points.

Find the slope of the distance vs. time^2 graph.

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.