Question

Determine o zero das funções afim.
a) y= 3x +21
b) y= -4x + 32
c) y= 5x + 12

Answer 1

$\boxed{\begin{array}{l}\sf o~zero~da~func_{\!\!,}\tilde ao~f(x)=ax+b\\\sf\acute e~x=-\dfrac{b}{a}.\\\sf y=3x+21\\\sf x=-\dfrac{21}{3}=-7\\\\\tt b)~\sf y=-4x+32\\\sf x=-\dfrac{32}{-4}=8\\\\\tt c)~\sf y=5x+12\\\sf x=-\dfrac{12}{5}\end{array}}$

Answer 2

Resposta:

Explicação passo a passa o:

a) y= 3x +21 = 63

b) y= -4x + 32= -128

c) y= 5x + 12= 60