To determine the initial value, we can choose any of the given points on the line. Let's choose the point (0, 3).
Therefore, the initial value (y-intercept) of the linear function is 3.
To calculate the rate of change (slope) of the linear function, we can use the formula:
slope = (change in y) / (change in x)
Let's use the points (0, 3) and (3, 2) to calculate the slope:
slope = (2 - 3) / (3 - 0) = -1 / 3
Therefore, the rate of change (slope) of the linear function is -1/3.