[tex]A (\frac{1}{2}, -\frac{1}{3})\\B(-\frac{1}{3}, \frac{3}{4})\\\\a = \frac{y_2-y_1}{x_2-x_1}\\\\a = \frac{\frac{3}{4}+\frac{1}{3}}{-\frac{1}{3}-\frac{1}{2}} = \frac{\frac{13}{12}}{-\frac{5}{6}} = -\frac{13}{10}[/tex]
Prosta prostopadła ma współczynnik a odwrotny i przeciwny
[tex]a_2 = \frac{10}{13}[/tex]
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[tex]A (\frac{1}{2}, -\frac{1}{3})\\B(-\frac{1}{3}, \frac{3}{4})\\\\a = \frac{y_2-y_1}{x_2-x_1}\\\\a = \frac{\frac{3}{4}+\frac{1}{3}}{-\frac{1}{3}-\frac{1}{2}} = \frac{\frac{13}{12}}{-\frac{5}{6}} = -\frac{13}{10}[/tex]
Prosta prostopadła ma współczynnik a odwrotny i przeciwny
[tex]a_2 = \frac{10}{13}[/tex]