we have that
the given equation is
[tex]y=0.013x^{2}[/tex]
we know that
The general linear equation is equal to
[tex]y=mx+b[/tex]
where
m and b are real numbers
Every equation in this form is a linear equation. The linear equations represent linear functions. Equations than cannot be written in this form are not linear equations, and therefore are not linear functions
The given equation is not a line, is a quadratic equation, therefore is not a linear equation, is a non linear function.
Only a linear relationship can be proportional,
so
the relationship is not proportional
therefore
the answer is
the relationship between x and y is a non linear function and is not proportional
