Select the direction that this parabola opens. y=-x^2/20 A) up B) down C) left D) right

Question

asked Apr 21, 2017 133k views

2 Answers

Jehon · Answer 1 · 2017-04-27T01:20:53+0000

Answer:

the parabola opens down

Explanation:

Select the direction that this parabola opens.

y=-x^2/20

y=(-x^2)/(20)

To find the direction of the parabola y=ax^2 +bx+c ,we need to consider the value of 'a'

If 'a' is positive then the parabola opens up

If 'a' is negative then the parabola opens down

from the given equation

y=(-x^2)/(20)

The value of a=-1 which is negative

so the parabola opens down