Question 749512
Substitute the values from the ordered pair and check if the equation is true.


Your function is extremely ambiguous.  One could only guess what you mean:
f(x)=-x^2-5x+6
or
f(x)=(-x)^2-5x+6
or
f(x)=-(x^2-5x+6)
or
something else?


I would give one or two steps into the process if I knew exactly what is your given function.  Anyway, substitute 2 for x and -6 for f(x) and find if the equation is true.