如图,在平面直角坐标系中,二次函数的图象交坐标轴于A(﹣1,0),B(4,0),C(0,﹣4)三点,点P是直线BC下方抛物线上一动点.
—Yes. He came to study here just last month.
已知二次函数y=ax2+bx-3的图象经过点A(2,-3),B(-1,0).