423° Вправа 423Алгебра 8 клас Тарасенкова 2025 · § 11 · стор. 123

423. Назвіть коефіцієнт k функції y = k/x, якщо:

1) ${\displaystyle y=}$${\displaystyle \frac{1}{x}}$; ${\displaystyle k=}$${\displaystyle 1}$;

2) ${\displaystyle y=}$${\displaystyle -\frac{4}{x}=}$${\displaystyle \frac{-4}{x}}$; ${\displaystyle k=}$${\displaystyle -4}$;

3) ${\displaystyle y=}$${\displaystyle \frac{4}{x}}$; ${\displaystyle k=}$${\displaystyle 4}$;

4) ${\displaystyle y=}$${\displaystyle \frac{10}{x}}$; ${\displaystyle k=}$${\displaystyle 10}$;

5) ${\displaystyle y=}$${\displaystyle -\frac{12}{x}=}$${\displaystyle \frac{-12}{x}}$; ${\displaystyle k=}$${\displaystyle -12}$;

6) ${\displaystyle y=}$${\displaystyle \frac{-25}{x}}$; ${\displaystyle k=}$${\displaystyle -25}$;

7) ${\displaystyle y=}$${\displaystyle \frac{28}{x}}$; ${\displaystyle k=}$${\displaystyle 28}$;

8) ${\displaystyle y=}$${\displaystyle \frac{100}{x}}$; ${\displaystyle k=}$${\displaystyle 100}$.