To start off, since you're looking for a line that is parallel to y=2x–5, the equation will contain “2x” in it because it's parallel, meaning that it has the same slope.
Next, find a constant for the line that has a slope of 2x, crossing (2,3).
Given that the original equation 2x crosses (2,4), you need to go down one, meaning that the constant is -1.
This means that your equation for
(2,3), parallel to y=2x–5, is y=2x–1
Answer: y=2x–1
Hope this helps! c: