Distance Formula.
The distance \(d\) between two points \(P_{1}(x_1, y_1)\) and \(P_{2}(x_2, y_2)\) is
\begin{equation*}
\blert{d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}
\end{equation*}
\(x\) | \(-5\) | \(-4\) | \(-3\) | \(-2\) | \(-1\) | \(0\) | \(1\) | \(2\) | \(3\) | \(4\) | \(5\) |
\(y\) | \(\hphantom{0000} \) | \(\hphantom{0000}\) | \(\hphantom{0000}\) | \(\hphantom{0000}\) | \(\hphantom{0000} \) | \(\hphantom{0000}\) | \(\hphantom{0000}\) | \(\hphantom{0000}\) | \(\hphantom{0000} \) | \(\hphantom{0000}\) | \(\hphantom{0000}\) |
\(x\) | \(-1\) | \(-0.8\) | \(-0.6\) | \(0\) | \(0.6\) | \(0.8\) | \(1\) |
\(y\) | \(\hphantom{0000} \) | \(\hphantom{0000}\) | \(\hphantom{0000}\) | \(\hphantom{0000}\) | \(\hphantom{0000} \) | \(\hphantom{0000}\) | \(\hphantom{0000}\) |