Which expressions are equivalent
to 1/81 ? check all that apply.
picture provided

8-¹ ❌

9-² ✔️

9^8/9^4 ❌

9^8/9^10 ✔️

9^-6 . 9³ ❌

9^5 . 9^-7 ✔️

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: