The answer is no you cannot. Getting a car loan involves a contract. A 17 year old is still considered a minor in the eyes of the law. Because of this, a minor cannot enter into a binding contract.
The tangent at a given point on a curve is the straight line that just touches the curve at the given point. Leibniz defined this as being the straight line through two infinitesimally close points on the curve at that point, leading to the relationship between the slope of the tangent and the first derivative of the function (if both exist) at that point.
The function on the left does not have a derivative at x = 0, because the function is discontinuous there. At x = 0 there is obviously no tangent. As for the graph on the right, it is the absolute value function, y = | x |. (Topic 5 of Precalculus.) And it is not possible to define the tangent line at x = 0, because the graph makes an acute angle there. In fact, the slope of the tangent line as x approaches 0 from the left, is â1.