Question

dada a função afim f(×) = -3x+5, determine os valores de x para que:

a) f(x) = 1

b) f(x) = 0

c) f(x)= 1/3

d) f(x) = 5

e) f(x) = -5

f) f(x) =7​

Answer 1

a) f(x) = 1 = 2

f(1) = -3.1+5,

f(1) = -3+5,

f(1) = 2

b) f(x) = 0 = 5

f(0) = -3.0+5,

f(0) = 0+5,

f(0) = 5

c) f(x)= 1/3 = 4

f(1/3) = -3.1/3 + 5

f(1/3 = -1 + 5

f(1/3) = 4

d) f(x) = 5 = -10

f(5) = -3.5 + 5

f(5) = -15 + 5

f(5) = -10

e)) f(x) = -5 = 20

f(-5) = -3.-5 + 5

f(-5) =  15 + 5

f(-5) = 20

f) f(x) =7​ = -16

f(7) = -3.7 + 5

f(7) = - 21 + 5

f(7) = - 16