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WA parabola opens up (rather than down) if the coefficient of the quadratic term is positive.

When (A) is greater than 0

Q: When does a parabola open down?

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No. A parabola can open up or down.

Down

down

A parabola can open left, down, right, or left on a graph, if that's what you mean:\

DOWN!

It does both depending if it is positive or negative

In that case it opens upwards.

In classic geometry, it opens down when the directrix is above the focus.In analytical (coordinate) geometry, if the equation of the parabola isy = ax^2 + bx + c, it opens down if a < 0.

The given terms can't be an equation without an equality sign but a negative parabola opens down wards whereas a positive parabola opens up wards.

A parabola is a quadratic figure. It is an intersection of a right conical surface, a plane parallel to a generating straight line of the surface. Basically, it's an arc shape. It can open up, down, left, or right.

A parabola opening up has a minimum, while a parabola opening down has a maximum.

This is called the 'standard form' for the equation of a parabola:y =a (x-h)2+vDepending on whether the constant a is positive or negative, the parabola will open up or down.