Parallel construction is not hard to achieve, but researchers must be diligent when writing questions to ensure parallelism. The following examples illustrate what to watch for and how to write ...

Lines which are parallel have the same gradient. For example, \(\text{y = 2x + 1}\) and \(\text{y = 2x - 2}\) will be parallel because they both have a gradient of 2. We want to determine if the ...