Question

W is directly proportional to h. w = 18 when h = 3. What is the equation for this relationship?

Answer 1

We know that w is directly proportional to h, this means that:

`w=kh`

where k is our constant of proportionality. To find out its value we plug the values the problem give and solve for k:

`\begin{gathered} 18=3k \\ k=(18)/(3) \\ k=6 \end{gathered}`

Therefore the equation that represents this relationship is:

`w=6h`