Answer
Does not make sense
Work Step by Step
Standard form of an ellipse is $\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1$
When we change the plus sign in the standard form; this will not lead to change the length or elongation from horizontal to vertical; in fact by doing so the graph of ellipse will change to a hyperbola.
Hence, the statement does not make sense.
