Question

if the graphical representation of the quadratic polynomial y=ax²+bx+c is an open upward parabola, then​

Answer 1

When "a" is positive, the graph of y = ax2 + bx + c opens upward and the vertex is the lowest point on the curve. As the value of the coefficient "a" gets larger, the parabola narrows. When "a" is negative, the parabola opens downward and the vertex is the highest point on the curve.