1. The problem statement, all variables and given/known data Question: Determine the equations of both lines that are tangent to the graph of f(x) = x2 and pass through point (1,-3). 2. Relevant equations Some of the equations that I could use for this problem are: y-y1=m(x-x1) (Point-slope Equation) the derivative of the function f(x) from first principles (the limit of the difference quotient, as h approaches 0) 3. The attempt at a solution First, I took the derivative of the function x2. As a result, f`(x) = 2x But I'm not sure on how to go from here.