a) Khi x = 2 thì y = f(x) = 10.2 + 1 = 21

    Khi x = -1,5 thì y = f(x) = 10.(-1,5) + 1 = -14

    Khi x = 0 thì y = f(x) = 10.0 + 1 = 1

    Khi x = $\frac{3}{2}$ thì y = f(x) = 10.$\frac{3}{2}$ + 1 = 16

b) Nếu y = f(x) = 10x + 1 = -9, suy ra x = -1

    Nếu y = f(x) = 10x + 1 = -4, suy ra x = -0,5

    Nếu y = f(x) = 10x + 1 = 6, suy ra x = 0,5

    Nếu y = f(x) = 10x + 1 = 31, suy ra x = 3.