Question

veja a função f(x) = 3× +1, determine o valor de x para se obtenha

a) f(x) =9
b) f(x) = 11
c) f(x) = 0
d) f(x) = 15​

Answer 1

Resposta:

a)$9=3x+1\\9-1=3x\\8=3x\\\frac{8}{3} =x$

b) $11=3x+1\\11-1=3x\\10=3x\\\frac{10}{3} =x$

c) $0=3x+1\\-1=3x\\\frac{-1}{3} =x$

d) $15=3x+1\\15-1=3x\\14=3x\\\frac{14}{3} =x$