Are the following statements true or false? ? 1. The line parametrized by x = 7, y = 5t, z=6+t is parallel to the x-axis. ? 2. The parametric curve x = (3t+4)2, y = 5(3t+4)2-9, for 0 ≤t≤ 3 is a line segment. ? 3. A parametrization of the graph of y = ln(x) for a > 0 is given by a = e', y = t for -[infinity]