Question

даю 30 баллов !!!!!!​

Answer 1

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Answer 2

$\displaystyle\bf\\y=\frac{k}{x} \\\\A\Big(-5 \ ; \ 8\Big) \ \ \ \Rightarrow \ \ \ x=-5 \ \ ; \ \ y=8\\\\\\8=\frac{k}{-5} \\\\\\k=8\cdot(-5)\\\\\\\boxed{k=-40}$