17 - y
The expression is 9*x.
In Algebra a term is either a single number or variable, or numbers and variables multiplied together.
the product of 8 and the sum of 10 and -7
Which phrase describes the variable expression 6.w
The number is called the coefficient of the variable
That looks like the description of an EXPRESSION. However, an expression need not have "at least one operation"; a single number, or variable, is a perfectly valid expression.
Assuming you call your number "n", the expression would be "14n". You can replace "n" with whatever variable you want to use.
It is the coefficient of the variable