Practice problem
Which of the following are correct representation(s) of the distance formula?
(x2−x1)2+(y2−y1)2(x_2-x_1)^2+(y_2-y_1)^2(x2−x1)2+(y2−y1)2
(y2−y1)2+(x2−x1)2(y_2-y_1)^2+(x_2-x_1)^2(y2−y1)2+(x2−x1)2
(y2−y1)2+(x2−x1)2\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}(y2−y1)2+(x2−x1)2
(x2−x1)2+(y2−y1)2\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}(x2−x1)2+(y2−y1)2
Type a concept, like “slope” or “photosynthesis”.