Find an equation for the line tangent to the curve at the point defined by the given value of t. Also, find the value of - day dy 2 a at this point. 1 + 3 . y = - t- 3, t=4 Write the equation of the tangent line. y =]x- 0 Simplify your answers. Use integers or fractions for any numbers in the expression.) What is the value of d'y dx2 at this point? dx 2 = (Type an integer or a simplified fraction.) 8 9 R P G H