equation proportional

Question

Write the following sentence as an equation: x is directly proportional to y and is inversely proportional to the cube of z

Answer 1

"x is directly proportional to y" means y = kx in other words, x and y are on opposite sides of an equal sign and there is a constant of proportionality (k) thrown in there to make things work out properly for the situation.

"x is inversely proportional to the cube of z" means x = k/z³ in other words while "x" is on one side of an equal sign, z³ is on the other side BUT in the denominator, again with a "k" thrown in there to make things work out properly for the situation.

If you put these together the x = ky/z³