Answer:
[tex] v = \dfrac{8}{a(y - 7)} [/tex]
Step-by-step explanation:
[tex] y = \dfrac{8}{av} + 7 [/tex]
Subtract 7 from both sides.
[tex] y - 7 = \dfrac{8}{av} [/tex]
Multiply both sides by v.
[tex] v(y - 7) = \dfrac{8}{a} [/tex]
Multiply both sides by 1/(y - 7).
[tex] v = \dfrac{8}{a(y - 7)} [/tex]