Question

R has coordinates (-4,9) S has coordinates (4,6). what is rs

Answer 1

distance formula:\[d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\] \[d=\sqrt{(4+4)^2+(6-9)^2}\]\[d=\sqrt{8^2+(-3)^2}\]\[d=\sqrt{64+9}\]\[d=\sqrt{73}\]