Which is a rule for the function given by the input-output table?

Question

Input,x= 8, 10, 12, 14

output, y= 5, 7, 9, 11

a) y= x-3

b) y= x-2

c) y= x+3

d) y= x+2

e) none of the above

can someone please help me, I never learned this. Thank you

Answer 1

Each y value (output value) is 3 less than the corresponding x value (input value). 5 is three less than 8, 7 is three less than 10, etc.

So, y = x - 3