Answer
A) $(1,13)$
B) $(x<1)$
C) $x>1$
D) $(-2,0),\ (4,0)$
E) $(0,11.5)$
F) $f(-2)= 0$
G) $ x= -3$ and $ x= 5$
Work Step by Step
A) The graph shows that when $x=1$, $y= 13$. The vertex of the function is at $(1, 13)$.
B) The function is increasing for $x<1$.
C)The function is decreasing for $x> 1$.
D The graph crosses the $x$-axis at the $x$ intercepts $(-2,0)$ and $(4,0)$.
E) When $x= 0$, $y= 11.5$. The vertical intercept is at $(0,11.5)$.
F) We see that $f(-2) = 0 $.
G) We see that $f(x) = -10$ for $ x= -3$ and $ x= 5$.
