A drone must fly straight from point to point on a coordinate grid

MATHEMATICS · Single correct · CBSE · Mathematics · Coordinate Geometry · Coordinate Geometry

Problem

A drone must fly straight from point P(x1,y1)P(x_1, y_1) to point Q(x2,y2)Q(x_2, y_2) on a coordinate grid. Which of the following expressions gives the distance PQPQ in units? (a) (x2−x1)2+(y2−y1)2(x_2 - x_1)^2 + (y_2 - y_1)^2 (b) (x2+x1)2+(y2+y1)2\sqrt{(x_2 + x_1)^2 + (y_2 + y_1)^2} (c) (x2−x1)2+(y2−y1)2\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} (d) (x2−x1)+(y2−y1)\sqrt{(x_2 - x_1) + (y_2 - y_1)}

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