The V-shaped graph opens downward, and its vertex lies at (1, 12).
Step-by-step explanation:
first, plot the graph of f(x),
take some 5 random negative and positive x values and then find corresponding f[x] values.plot f(x) on y-axis. now, plot these points on the graph and finally join all the points. this gives u the required graph.
I have plotted the graph and uploaded it.
refer it.
by seeing the graph, we can easily say that,The V-shaped graph opens downward, and its vertex lies at (1, 12).