Question 80654
QUESTION:


Given f(x)= -5x -1, find f(a-1).



ANSWER:


Given f(x)= -5x -1, 


To find f(a-1)....replace x by ( a-1) in the given function.


==> f(a-1) = -5(a-1) -1



==>        = -5*a -5*-1 -1



==>        = -5a + 5 - 1



==>        = -5a + 4



So f(a-1) = -5a + 4




Hope you understood.



Regards.


Praseena.