analyzing graphs to determine important features\nwhich statement is true about the given function?\n○…

analyzing graphs to determine important features\nwhich statement is true about the given function?\n○ f(x)>0 over the interval (-∞, 3).\n○ f(x)>0 over the interval (-∞, ∞).\n○ f(x)<0 over the interval (-∞, 3).\n○ f(x)<0 over the interval (-∞, ∞).
Answer
Answer:
$f(x)<0$ over the interval $(-\infty,3)$
Explanation:
Step1: Observe the graph
Check the $y -$ values for $x\in(-\infty,3)$.
Step2: Analyze $y -$ values
For all $x$ values less than 3, the graph lies below the $x -$ axis, so $y=f(x)<0$.
Step3: Eliminate other options
The graph has positive $y -$ values for $x > 3$, so options with $f(x)>0$ over $(-\infty,3)$ or $(-\infty,\infty)$ are wrong, and the graph is not always negative over $(-\infty,\infty)$.