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) $y = 50 x$

Question

Quizplus · Accepted Answer

The variation equation for direct variation as the square of $x$ is $y = kx^2$. Substituting $y = 50$ and $x = 5$ gives $50 = k(5)^2$, solving for $k$ gives $k = 2$, so the equation is $y = 2x^2$.

Find the Variation Equation for the Variation Statement yyy Varies Directly as the Square Of

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