Answer:
k = -2
Step-by-step explanation:
x -1 0 2 5
f(x) 2 0 -4 -10
ƒ(x) = kx
Substitute a pair of values for x and ƒ(x)
-10 = k×5
Divide each side by 5
The constant of variation k = -2.
0=2
There are no solutions
there isnt any increase or decrease
$2700
You multiply 180 by 15 and you get 2700 dollars.