Final answer:
The sentence "A number is no less than seven" is translated into the inequality y ≥ 7, which indicates y is seven or greater.
Step-by-step explanation:
Translating the sentence "A number is no less than seven" into an inequality using the variable y, we express this relationship as y ≥ 7. This inequality signifies that the value of y is either equal to seven or greater than seven. To demonstrate this using metric measurements as a reference, if you were comparing lengths, it would be similar to saying that one length is at least 7 cm, which means it could be 7 cm or longer.