Reflect the standard parabola
The standard parabola can also be reflected by the parameter $a$. The general formula is:
$y=ax^2$
!
Remember
- If $a$ > 0, the parabola is open at the top.
- If $a$ < 0, the parabola is opened down.
Example
$\color{blue}{f(x)=x^2}$
$\color{green}{g(x)=-x^2}$