Concept: Parallel lines have the same gradient, so we match slopes and use the given intercept.Explanation:The given line is 2x−y=5.Rearrange into the form y=mx+c:y=2x−5Thus, its gradient is m=2.A parallel line must also have gradient m=2.Its intercept is 5, so it passes through (0,5).Using y=mx+c, the equation becomes:y=2x+5Rearrange to match the options:2x−y=−5Answer:The correct equation is 2x−y=−5.