how to find y for x and k?

What equation are you dealing with?

k=1.5 and x=50

y=?

Still haven't given me an equation to show the relationship between the terms.

That is it

To find the value of y for a given x and k, we need additional information such as the equation or relationship between the variables y, x, and k. Without a specific equation, it is not possible to provide a direct answer. However, I can explain the general steps to find y if you provide the equation or context of the problem.