A scatterplot shows data points generally decreasing from left to right. The points are clustered around a line that appears to cross the y-axis at approximately (0, 20). For example, some points are roughly (1, 18), (4, 13), and (7, 7).
Which of the following could be the equation for a line of best fit for the data shown in the scatterplot?
y = 2x + 20
y = -2x + 20
y = -0.5x + 20
y = -2x - 20
