Net Income: is the remaining income of a firm after adding total revenue and gains and subtracting all expenses and losses for the reporting period. Net income can be distributed among holders of common stock as a dividend or held by the firm as an addition to retained earnings.
Net Cash Flow: The sum of incoming cash flows and outgoing cash flows over a specified period of time is called Net Cash Flow: Net Cash Flow = Sum of inflows – Sum of Outflows (Over a given time period)
Net income may have carried over from the previous year but I'm not sure. Good luck with your homework!