Question

Найдите значение функции y＝1/4x+1/7при x＝-3

Answer 1

$y = \frac{1}{4} x + \frac{1}{7} \: pri \: x = - 3 \\ y = \frac{1}{4} \times - 3 + \frac{1}{7} = - \frac{3}{4} + \frac{1}{7} = - \frac{21}{28} + \frac{4}{28} = - \frac{17}{28}$