Jamal drew the function below. Which explains whether or not his function is linear? On a coordinate plane, a line with negative slope goes through points (0, 1.5) and (1.5, 0). It is linear because it has a constant rate of change. It is linear because it does not have a constant rate of change. It is not linear because it has a constant rate of change. It is not linear because it does not have a constant rate of change.