The latin letter y is used to represent a variable or coefficient. Most commonly, y is the vertical dimension in the 2D cartesian coordinate system.
Symbol  Format  Data 

y  Unicode 

TeX 


SVG 
The Latin Alphabet is a collection of 26 symbols that form the basis of the English language. The alphabet's symbols are used throughout mathematics to represent variables, constants, and coeffecients.
The capital Latin letter Y.