Answer:
9. -64
11. -225
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here (h, k) = (- 2, 3) and r = 3 , then
(x + 2)² + (y - 3)² = 9 ← expand left side using FOIL
x² + 4x + 4 + y² - 6y + 9 = 9 ( subtract 9 from both sides )
x² + y² + 4x - 6y + 4 = 0 → A
we are given

we have to write this in
form
we can rewrite our function as

we can simplify value inside parenthesis
we get

now, we can compare it with
form
and find 'a'
we get

Since,

so, this is exponential decay function.........Answer