For the following exercises, find the equation of the tangent line T(x) to the graph of the given function at the indicated point. Use a graphing calculator to graph the function and the tangent line. 118. [T] y = 3x²+4x+1 at (0, 1) 119. [T] y = 2√x + 1 at (4, 5) 120. [T] y = 2x at (-1, 1) x-1 121. [T] y = 2 3 -- at at (1, -1) x-