## anonymous one year ago Explain the distance formula. Then use it to calculate the distance between A(1, 1) and B(7, -7)

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1. Michele_Laino

part B) the requested distance is: $\Large \begin{gathered} d = \sqrt {{{\left( {{x_2} - {x_1}} \right)}^2} + {{\left( {{y_2} - {y_1}} \right)}^2}} = \hfill \\ \hfill \\ = \sqrt {{{\left( {7 - 1} \right)}^2} + {{\left( { - 7 - 1} \right)}^2}} = \sqrt {{6^2} + {{\left( { - 8} \right)}^2}} = ...? \hfill \\ \end{gathered}$

2. Michele_Laino

Part A) |dw:1441044071821:dw| If we apply the theorem of Pitagora, we can write: $\Large d = \sqrt {{{\left( {{x_2} - {x_1}} \right)}^2} + {{\left( {{y_2} - {y_1}} \right)}^2}}$

3. anonymous

Okay, kinda confusing. Is that it?

4. anonymous

Part B would be 70?