Question

use the information to write the appropriate variation equation, and find y for the given values
y varies jointly as x and the inverse of z. y=(-32/3) when x=-4 and z=3. find y when x=10 and z=-8
a. y=(xz/8);-10
b. y=(8x/z);-10
c. y=(z/3x);(-4/15)
d. y=(8/xz);(-1/10)