Geometry: Common Core (15th Edition)

$(0.5,5.5)$
Find the midpoint of the x-coordinate. Use the midpoint formula: $M=\frac{x_1+x_2}{2}=\frac{2+(-1)}{2}=\frac{1}{2}=0.5$ Find the midpoint of the y-coordinate. Use the midpoint formula: $M=\frac{y_1+y_2}{2}=\frac{(4+7)}{2}=\frac{11}{2}=5.5$