Question

please solve both the parts and explain it​

Answer 1

Answer:

Step-by-step explanation:

There is an easy way to tell whether the graph of a quadratic function opens upward or downward:

if the leading coefficient is greater than zero, the parabola opens upward, and if the leading coefficient is less than zero, the parabola opens downward.

Which means => y =ax²+bx+c    if  a>0 parabola opens upward

                                                          a<0 parabola opens downward