Suggestion

In the above table the values of \(y\) were calculated from a formula \(y = Ax^2 + Bx\), where \(A\) and \(B\) are constants. One of the values of \(y\), however, has been deliberately misprinted.

Plot the values of \(y/x\) against those of \(x\), …

Why does the question ask us to use \(y/x\) rather than \(y\)?