The image presents a scatter plot with two distinct lines, one representing the true model and the other the estimated model. The true model is represented by a blue line with a downward-sloping curve, and the estimated model is depicted by a red line with a curved, upward-sloping curve. The x-axis is labeled with the numbers 0 through 10, and the y-axis is labeled with the values of theta_1, theta_2, and theta_3.