Answer
$
y=\frac{7}{4}\cdot(x-1)(x-4)
$
Work Step by Step
The zeros are $x=1,4$, so $y=a(x-1)(x-4)$. Solving for $a$, we have
$$
\begin{aligned}
a(0-1)(0-4) & =7 \\
4 a & =7 \\
a & =\frac{7}{4}
\end{aligned}
$$ Hence $$
y=\frac{7}{4}\cdot(x-1)(x-4)
$$
