[tex]y=\frac{a}{x}\\\\P=(-3,-\frac{4}{15})\rightarrow x=-3, \ y=-\frac{4}{15}\\\\\frac{a}{-3}=-\frac{4}{15} \ \ |\cdot(-3)\\\\a=\frac{12}{15}\\\\a=\frac{4}{5}\\\\\text{Odp.C}[/tex]
