Hello, thank you for taking the time to post your question!
The underlying equation that you want to use here is y =mx + b, the slope-intercept form of a linear equation
For this scenario, we have a line that is parallel to y=2x+1 and passes through the point (0,5).
Parallel lines have the same slope, so the slope of your new line is m=2 ... and since the line passes through the point (0,5), the y-intercept is b=5.
Meaning that our finalized slope-intercept form here is y=2x+5
I hope that helps you get moving in a better direction on this type of question! Feel free to reach out if you have any additional questions beyond that :)