xy = –16. What is the constant of variation for this relationship?

A.-6

B.-1.6

C.1/4

D.-0.16

Question

xy = –16.  What is the constant of variation for this relationship?
	
	
 
A.-6
	

	
 
B.-1.6
	

	
 
C.1/4
	

	
 
D.-0.16

anonymous · Answer

and i will give medal to the best answer and explanation

jim_thompson5910 · Answer

General form of inverse variation equations

x*y = k

k is the constant of variation

jim_thompson5910 · Answer

x*y = k can be rewritten into $\LARGE y = \frac{k}{x}$ after solving for x

anonymous · Answer

ok i got it written down what next?

anonymous · Answer

can you give me the answer so  i can check my work? then i will give you a medal.

anonymous · Answer

jim_thomsan?

jim_thompson5910 · Answer

the answer is practically given to you

compare x*y = k to the equation you have x*y = -16

you'll see what the value of k must be

anonymous · Answer

so -16 is the answer

anonymous · Answer

no not that

anonymous · Answer

-6

anonymous · Answer

jim?

anonymous · Answer

jim_thopson 5910?

jim_thompson5910 · Answer

yeah k = -16

jim_thompson5910 · Answer

so -16 is the constant of variation