The given equation y=a[tex]x^{2}.+bx+C[/tex] represents a degree 2 equation .The equation drawn on a graph represents a parabola.The value of a decides if the parabola will open up or down.It can be negative or a positive number but not 0.
If a=0 then equation will represent a straight line .
If a is negative parabola opens down.If a is positive parabola open up.
The value of a is only negative is False.
