Chapter 4 - Quadratic Functions - 4.2 Graphing Quadratics in Vertex Form - 4.2 Exercises - Page 317: 15

a) $(-4,-8)$ b) $x= -4$ c) positive d) $h= -4$ and $k= -8$ e) $(2,15)$

All values are read directly from the graph. a) The vertex is $(-4,-8)$. b) The equation of the axis of symmetry is $x= -4$. c) The parabola opens up, and so, the value of $a$ is positive. d) $h= -4$ and $k= -8$. e) The point symmetric point to the point $(-10,15)$ is $(2,15)$.