Question

Preciso da resposta

Answer 1

Resposta:

a)

$y = 5 - \frac{x}{2} \\ y = 5 - \frac{16}{2} \\ y = \frac{10}{2} - \frac{16}{2} \\ y = - \frac{6}{2} \\ y = - 3$

b)

$y = 5 - \frac{x}{2} \\ 9 = 5 - \frac{x}{2} \\ 4 = - \frac{x}{2} \\ 8 = - x( - 1) \\ - 8 = x$

c)

$y = 5 - \frac{x}{2} \\ \frac{3}{4} = 5 - \frac{x}{2} \\ \frac{3}{4} = \frac{20}{4} - \frac{2x}{4} \\ 3 = 20 - 2x \\ - 17 = - 2x( - 1) \\ 17 = 2x \\ x = \frac{17}{2}$