f(x) + 2.
if we have say f(x) = x + 1 then 2 units will be added to f(x) when it is moved up 2 units.
so the equation of this line will be f(x) + 2 which in this example is
x + 1+ 2.
the new function is x + 3.
the third choice
let n represent the number
twice the number =2n
4 times the number = 4n
given that twice the number is atleast 3 less than four times the number
algebraically this can be written as
we can add 3 to both sides
so n should be atleast 1.5
if n is natural number or integer then least value of n is 2.