A parabola passes through the points (0,1)(0, 1)(0,1), (1,3)(1, 3)(1,3), and (2,9)(2, 9)(2,9). What is its equation?
y=x2+2x+1y = x^2 + 2x + 1y=x2+2x+1
y=2x2+1y = 2x^2 + 1y=2x2+1
y=x2+x+1y = x^2 + x + 1y=x2+x+1
y=2x2+2x+1y = 2x^2 + 2x + 1y=2x2+2x+1