The rate of change at x=0.6 can be estimated by finding the slope of the line passing through the points (0,0) and (1,-0.5).
The slope of a line can be calculated using the formula: slope = (y2 - y1)/(x2 - x1).
Plugging in the values from the given points, we have:
slope = (-0.5 - 0) / (1 - 0) = -0.5 / 1 = -0.5
Therefore, the rate of change at x=0.6 is -0.5.