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22 votes
On the graph below, what is the length of side AB? B ...

User Takashi
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1 Answer

11 votes
11 votes

The distance between two points in the plane is:


d(P,Q)=\sqrt[]{(x_2-x_1)^2+(y_2}-y_1)^2

The points A and B have coordinates A(5,3) and B(5,6). Then the distance between them is:


\begin{gathered} d(A,B)=\sqrt[]{(5-5)^2+(6-3)^2} \\ =\sqrt[]{(3)^2} \\ =\sqrt[]{9} \\ =3 \end{gathered}

Therefore, the length of the side AB is 3 units.

User Sulabh Qg
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