Final answer:
The equation 5y = 1273x means that y is five times the value of 1273x, signifying a direct proportionality where y increases by five times for every unit increase in x.
Step-by-step explanation:
Interpreting the equation 5y = 1273x in words, we're essentially describing a relationship between two variables, y and x. In this equation, y is directly proportional to x, meaning as x increases or decreases, y will do so as well in a consistent manner. The number 1273 represents the constant of proportionality; for every one unit increase in x, y will increase by 1273 times 5. The equation can be verbalized as "The quantity five times y equals 1273 times x."