Question

How do I get the input and output of a problem if the equation is 'y=25-2x'? (I'm not even sure if that makes sense.)

Answer 1

If x=2
then y=25-2(2)
25-4=21
21 = y

X is the input
Y is the output

X can be any number

Answer 2

Would it be 23=25-2(1)