It can contain letters and numbers but must start with a letter. It must contain at least one letter (at the start of the name). It must not contain special characters such as !@£$%&* or punctuation ...

A variable's name is known as an identifier. The identifier given to a variable usually follows certain rules: It can contain letters and numbers but must start with a letter. It must contain at least ...

Algebra Ace has expanded its 9th Grade Algebra Made Easy program, now with new lessons on variables and 3D graphing, featuring step-by-step instruction, practice problems, and parental monitoring ...