Relationship between input and output in mathematics​

Input is the info inserted which is used to obtain answer i.e. output

Output is the answer obtained afterwards

For eg. 3+2=5 here 3+2 are input (both the integers and function as well) and 5 is the output

Hope it helps :)

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50