Question

determine o zero das funções
a) y=-4x+8
b) y=-3x-21
c) y=2-8x
d) y=7-x
e) y=-4x-64
f) y=-6x+18
g) y=3x-9
h) y=4x-20​

Answer 1

Explicação passo-a-passo:

a) 0 = - 4x +8

4x = 8

x = 8/4

x= 2

b) 0 = - 3x - 21

3x = -21

x= - 21/3

x= -7

c) 0 = 2 - 8x

8x = 2

x = 2/8

x= 1/4

d) 0 = 7 - x

x = 7

e) 0 = -4x - 64

4x = -64

x = -64/4

x= - 16

f) 0 = -6x +18

6x = 18

x = 18/6

x = 3

g) 0 =3x -9

9 = 3x

9/3= x

x = 3

h) 0 = 4x - 20

20 = 4x

20/4= x

x = 5