Question

Plastic storage bins are designed so they can be nested. Four 10-gallon bins stacked together measure 26 inches high, and 9 stacked bins measure 41 inches high. Write an equation in the form y = mx + b to describe the relationship between x, the number of nested bins, and y, the height of the stack.

How would i write it?? It's kind of confusing first time taking this class as a senior