QUESTION IMAGE
Question
question
find the graph of the polynomial given below.
$f(x)=-2(x-3)(x+1)(x+8)$
select the correct answer below:
Step1: Find x-intercepts
Set $f(x)=0$, solve $-2(x-3)(x+1)(x+8)=0$.
Roots: $x=3$, $x=-1$, $x=-8$
Step2: Find y-intercept
Set $x=0$, calculate $f(0)$.
$f(0)=-2(0-3)(0+1)(0+8)=-2(-3)(1)(8)=48$
Step3: Analyze end behavior
Leading term: $-2x^3$. As $x\to+\infty$, $f(x)\to-\infty$; as $x\to-\infty$, $f(x)\to+\infty$.
Step4: Verify given graph
Check intercepts: x-intercepts at -8, -1, 3; y-intercept at 48. End behavior matches: left rises, right falls.
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The provided graph is the correct graph for $f(x)=-2(x-3)(x+1)(x+8)$ (select the option corresponding to this graph).