Question

Find the distance between the points (2, 4) and (1, 2) on the x-y graph

• A. $\sqrt{5}$
• B. $3\sqrt{2}$
• C. $2\sqrt{3}$
• D. $5\sqrt{3}$

Answer 1

The correct option is A $\sqrt{5}$

Distance between two points $(x_1,y_1)$ and $(x_2,y_2)$ can be calculated using the formula $\sqrt{{(x_2-x_1)}^2+{(y_2-y_1)}^2}$
Distance between the points $(2,4)$ and $(1,2)=\sqrt{{(1-2)}^2+{(2-4)}^2}=\sqrt{1+4}=\sqrt{5}$.