Final answer:
The slope of a line parallel to y = 2x + 1 is 2, because parallel lines have the same slope. Therefore correct option is B
Step-by-step explanation:
The question pertains to the concept of the slope of a line in algebra and how it relates to lines that are parallel. In the equation y = 2x + 1, the slope (m) is represented by the coefficient of x, which is 2.
Therefore, any line that is parallel to this line must have the same slope.
This means that the slope of a line parallel to y = 2x + 1 is 2, as parallel lines have identical slopes.