Question

According to the graph, what is the value of the constant in the equation below?

(4,12.5)(5,10)(10,5)(20,2.5)Plz help
A.15
B.5
C.2
D.50

Answer 1

If we assume your equation is ...

... y = k/x . . . . . . the equation of inverse variation

the value of k is found from any ordered pair of values.

... x·y = k . . . . . . multiply the above equation by x

... 4×12.5 = 5×10 = 10×5 = 20×2.5 = k = 50

The constant in the above equation is 50.