Question

CONSIDERE A FUNÇÃO DO 1 GRAU F(X)= -3X+2.DETERMINE OS VALORES DE X PARA QUE SE TENHA : A) F(x)=0 b)F(x)=11 c)F(x)=-1/2 d)F(x)=2 e)F(x)=-7 f)F(x)=1 g)F(x)=-1 h)F(x)=-10

Answer 1

Boa noite Giulia

f(x) = -3x + 2

 a)

-3x +  2 = 0
-3x = -2
x = 2/3 

b) 

-3x + 2 = 11
-3x = 9
x = -3

c)

-3x + 2 = -1/2
-3x = -1/2 - 4/2 = -5/2
3x = 5/2
x = 5/6

d) 

-3x + 2 = 2
-3x = 0
x = 0

e)

-3x + 2 = -7
-3x = -9
x = 3

f)

-3x + 2 = 1
-3x = -1
x = 1/3

g)

-3x + 2 = -1
-3x = -3
x = 1

h)

-3x + 2 = -10
-3x = -12
x = 4