Which of the following best describes the algebraic expression 10x+2?

For this case we have the following expression:
 10x + 2
 There are many different ways to describe the expression.
 We will name some of these ways:
 
 1) The expression is a linear function

 2) The slope of the line is positive and equal to 10.

 3) The cut point of the line with the y axis is 2.

 4) The domain of the function is from -inf to inf.

 5) The range of the function is from -inf to inf.