Question

Dada a função: f(x) = -2 x + 3, determine:
f(1/2)
f(3)
f(1/3)
f(2/3)

Answer 1

Basta substituir os valores no lugar do x:
f(1/2) = -2 . (1/2) + 3 = 1+3 = 4
f(3) = -2.3 + 3 = -6 +3 = -3
f(1/3) = -2/3 +3 = 7/3
f(2/3) = -4/3 + 3 = 5/3