Chapter 4 Quadratic Functions and Factoring - 4.10 Write Quadratic Functions and Models - 4.10 Exercises - Skill Practice - Page 313: 21

$y=x(x+3)$

We already know $y$, $x$, $p$ and $q$ from the given x-intercepts and the point, so in order to get the quadratic function we need to find $a$... $y=a(x-p)(x-q)$ $10=a(2+3)a(0+2)$ $10=10a$ $a=\frac{10}{10}$ $a=1$ Therefore the functions is... $y=x(x+3)$