The graph shows the temperature of a room after the heater has been turned on. What is the slope of the shown function that passes the point (0, 1)?

Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: The graph shows the temperature of a room after the heater has been turned on. What is the slope of the shown function that passes the point (0, 1)?

Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: The graph shows the temperature of a room after the heater has been turned on. What is the slope of the shown function that passes the point (0, 1)?
