Trig question help please?

if x varies inversely with y and x=-4 when y=30, find x when y =24.
1. -5
2. -3.2
3. 0.005
4. 180
And please explain how u got it

1. What does "varies inversely" mean? Hint: It involves some constant k.
2. You're given x=4 when y=30. You can find the value of k.
3. Plug-in the new value of y to get the value of x. Since k is a constant, use the same value you got in step 2.