DAY 1 - Tangent and velocity problems $1.4 (and 32.1 def 1-2) 1. You are given a function f and a point P. Express the slope of the tangent line to the graph of f at P as a limit of slopes of secant lines in two different ways: one as x - a, and another as h - 0. (see Definitions 1 and 2 in $2.1) Sketch a graph of the function showing the point P and a generic secant line through P and another point Q on the graph. (a) f(x) = 23 at P(1, 1)|