Question

Помогите с учи ру!!!!прошу

Answer 1

6)

$y = - \frac{3}{x} \\ y = - 0.75 \\ - 0.75 = - \frac{3}{x} \\ - \frac{3}{4} = - \frac{3}{x} \\ x = 4$

7)

$y = \frac{7}{x} \\ x = - \frac{1}{3} \\ y = \frac{7}{ - \frac{1}{3} } \\ y = 7 \times ( - 3) \\ y = - 21$

8)

$y = \frac{k}{x}$

Р ( 6 ; - 1,2 )

$\frac{k}{6} = - 1.2 \\ k = - 1.2 \times 6 \\ k = -7 .2$

$y = - \frac{7.2}{x}$

Q ( - 9 ; - 0,8 )

$- 9 \neq - \frac{7.2}{ - 0.8} \\ - 9 \neq \frac{72}{8} \\ - 9\neq9$

Ответ: нет