A portion of the graph of f(x) = −x2 + 6x − 5 is shown. Which of the following describes all solutions for f(x)?

Solution:
Given that the graph of
[tex]f(x)=-x^2+6x-5[/tex]is shown below:
Thus, for all solutions for f(x), we have
[tex](x,y)\text{ for all real numbers}[/tex]
The correct option is