Question

Determine os zeros das funções a seguir:

a) y = 5x + 2
 
b) y = – 2x
 
 
c) y = 4x – 7
 
d) = 2x - 4
​

Answer 1

Explicação passo-a-passo:

a)

$y = 5x + 2$

$0 = 5x + 2$

$- 5x = 2$

$x = \frac{ 2}{ - 5}$

$x = - \frac{2}{5}$

$\boxed{x = - 0,4}$

b)

$y = - 2x$

$0 = - 2x$

$- 2x = 0$

$x = \frac{0}{ - 2}$

$\boxed{x = 0}$

c)

$y = 4x - 7$

$0 = 4x - 7$

$- 4x = - 7$

$x = \frac{ - 7}{ - 4}$

$x = \frac{7}{4}$

$\boxed{x = 1,75}$

d)

$y = 2x - 4$

$0 = 2x - 4$

$- 2x = - 4$

$x = \frac{ - 4}{ - 2}$

$\boxed{x = 2}$

$\green{ \boxed{{\mathbb{ATT: ARMANDO}}}}$