Question

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

Answer 1

F(x) = -3x +2.

a) f(x)=0
-3x + 2 = 0
-3x = -2
x = -2/-3
x = 2/3

b) f(x)=11
-3x + 2 = 11
-3x = 11 - 2
-3x = 9
x = 9/-3
x = -3

c) f(x)= -1/2
-3x + 2 = -1/2
-3x = -1/2 - 2
-3x = (-1 -4)/2
-3x = -5/2
x = (-5/2)/3
x = (-5/2)(1/3)
x = -5/6