Bonjour,
f(x) = 3x - 5
f(6) = 3 * 6 - 5 = 18 - 5 = 13
f(0) = 3 * 0 - 5 = - 5
f(2/3) = 3 * 2/3 - 5 = 6/3 - 5 = 2 - 5 = -3
f(-4) = 3 * -4 - 5 = - 12 - 5 = -17
f(-2) = 3 * -2 - 5 = - 6 - 5 = -11
