Which trend line has been drawn correctly using the divide-center method? On a graph, points are grouped together and decrease. A trend line with negative slope goes through the center of the points. A dotted vertical line goes through the center of the trend line. On a graph, points are grouped together and decrease. A trend line with negative slope goes through the bottom of the points. A dotted vertical line goes through the right side of the trend line. On a graph, points are grouped together and decrease. A trend line with positive slope goes through the center of the points. A dotted vertical line goes through the center of the trend line.