For the inverse variation equation xy = k, what is the constant of variation, k, when x = –2 and y = 5?

-10.

Step-by-step explanation: We are given the inverse variation equation xy = k

We need to find the value of the constant of variation, k for given values x = -2 and y=5.

In order to find the value of the constant of variation, k we need to plug the values of x and y in given  inverse variation equation xy = k and solve for k.

Plugging x=-2 and y =5, we get

xy = k   => (-2) (5) = k.

On multiplying -2 and 5, we get -10.

Therefore, k = -10.

b) well because you get well

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!