To solve the exercise you can first order the quadratic equation: first, write the monomial of degree two, then the monomial of degree 1, and then the constant:
[tex]\begin{gathered} y=-13x+2x^2+7 \\ \text{ Reorder} \\ y=2x^2-13x+7 \end{gathered}[/tex]Then a quadratic equation in its standard form is written like this
[tex]ax^2+bx+c[/tex]Therefore, in this case, you have
[tex]\begin{gathered} y=2x^2-13x+7 \\ a=2 \\ b=-13 \\ c=7 \end{gathered}[/tex]