Question

Determine os zeros das funções a seguir: a) y=-8+2x b) f(x)=3x c) y=5x+20

Answer 1

$a) \: - 8 + 2x = 0 \\ 2x = 8 \\ x = \frac{8}{2} = 4$
$c) \: 5x + 20 = 0 \\ 5x = - 20 \\ x = \frac{ - 20}{5} = - 4$

$b) \: 3x = 0 \\ x = 0$