Answer: The function is decreasing for all real values of x where x < 1.5.
Step-by-step explanation:
The axis of symmetry is [tex]x=\frac{4-1}{2}=1.5[/tex]
Since the coefficient of [tex]x^2[/tex] is positive, the graph opens upwards.
So, the function is decreasing for all real values of x where x < 1.5.