Question

How to find the midpoint formula

Answer 1

$\bf \textit{middle point of 2 points }\\ \quad \\ \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ % (a,b) &({{ 6}}\quad ,&{{ -1}})\quad % (c,d) &({{ -3}}\quad ,&{{ -13}}) \end{array}\qquad % coordinates of midpoint \left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right) \\\\\\ \left(\cfrac{-3+6}{2}~,~\cfrac{-13-1}{2} \right)$

and fairly sure you know how much that is.