What is y?

"Y" is the 25th letter of the modern English alphabet. It is also a common vowel and can also be used as a consonant. In the International Phonetic Alphabet, the letter "y" is represented by the symbol /j/.

In mathematics, "y" is often used as a variable to represent an unknown or dependent value in algebraic expressions and equations.

In music, "y" is often used to represent the musical note "B" in solmization.

In morse code, the letter "y" is represented by the signal "−·− −−".

In technology, the "Y axis" is a term used in graphs and charts to represent the vertical axis, while the "X axis" represents the horizontal axis.

Overall, the letter "Y" has many different uses and meanings across various disciplines.