Final answer:
To find a parallel line to y = 2x + 4, choose the equation with the same slope, which is y = 2x + 4.
Step-by-step explanation:
To find a line parallel to y = 2x + 4, we need to find an equation with the same slope. The slope-intercept form of the equation is y = mx + b, where m is the slope and b is the y-intercept.
The slope of the given equation is 2. So any equation with a slope of 2 will be parallel to it.
Among the given options, the equation y = 2x + 4 has the same slope as the original equation and is therefore parallel to it.