Opens downward.
down
Nose points right, opens to the left.
It does both depending if it is positive or negative
right
Downwards
Down
DOWN!
LEFT
Opens downward.
down
Nose points right, opens to the left.
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.
It does both depending if it is positive or negative
If the number in front of the x squared is negative, then the parabola will open upwards. The opposite occurs when the number is positive.
open upward
If a is greater than zero then the parabola opens upward.