Question

how do you find f(a) if f(x)=1-4x ?

Answer 1

f(a) = 1-4*a

Answer 2

put a at the place of x
f(a) = 1-4a

Answer 3

thank you ! :)
how do i find f(a+h) ?

Answer 4

just put (a+h) at the place of x
1-4(a+h)

Answer 5

iridian_molina got it