<p>If the quadratic function faces downwards, has max. ponit at f(2). and f(x)=0, what could be a?
-1
0
2
3
4</p>
<p>and why??????? Thanks !!!!</p>
<p>a=-1
its the only negative choice..in order for a parabola to open downwards a<0</p>
<p>If the quadratic function faces downwards, has max. ponit at f(2). and f(x)=0, what could be a?
-1
0
2
3
4</p>
<p>and why??????? Thanks !!!!</p>
<p>a=-1
its the only negative choice..in order for a parabola to open downwards a<0</p>