This section contains 10 questions. The answer to each of the question is a single digit integer ranging from 0-9.

Let f be a real-valued differentiable function on R(the set of all real numbers) such that f(1) = 1. If the y-intercept of the tangent at any point p(x, y) on the curve y = f(x) is equal to the cube of the abscissa of P, then the value of f(-3) is equal to