Find the Variation Equation for the Variation Statement $y$ Varies Directly as the Square Of

Multiple Choice

Find the variation equation for the variation statement.
- $y$ varies directly as the square of $x ; y = 50$ when $x = 5$

A) $y = 25 x$
B) $y = 2 x ^ { 2 }$
C) $y = 10 x$
D) $y = 50 x$