Question

Determine os zeros de cada função afim:

a) Y= 2x-9

b) Y= -x-10

c) Y= -4x+8

$d) \: y = - 6x + \frac{1}{2}$

Answer 1

$a) \: y = 2x - 9 \\ seja \: y = 0 \\ 0 = 2x - 9 \\ 2x = 9 \\ x = \frac{9}{2} \\ b)y = - x - 10 \\ y = 0 \\ - x - 10 = 0 \\ - x = 10 \\ x = - 10 \\ c) y = - 4x + 8 \\ - 4x + 8 = 0 \\ - 4x = - 8 \\ x = \frac{8}{4} \\ x = 2 \\ d)y = - 6x + \frac{1}{2} \\ - 6x + \frac{1}{2} = 0 \\ - 6x = - \frac{1}{2} \\ x = \frac{1}{2} \times \frac{1}{6} \\ x = \frac{1}{12} \\ bom \: trabalho \: good$