Question

Suppose that x and y very inversely. X equals -4/15 when y =-105. Write a function that models the inverse variation then find Y when x = 10. Write a answer as a decimal and round to the nearest 10th if necessary. Y=_____when x=10

Answer 1

xy = k
(-4/15)(-105) = k
28 = k
xy = 28
10y = 28
Divide both sides by 10
y = 2.8