Question

If x is a number that is 7 more than y, how do you express x as a function of y?
x = f(y) = 7 + x
x = f(y) = 7 + y
y = f(x) = 7x
y = f(x) = y – 7
y = f(x) = 7 + y

Answer 1

what do you think? do you have any ideas?

Answer 2

I think its B or E

Answer 3

I think its the first one

Answer 4

it's not the first one. x is 7 more than y which is x=7+y

Answer 5

so you were correct, it is B

Answer 6

ok thanks

Answer 7

no problem. do you understand why?

Answer 8

yeah since it had the key term "more than y" which means add. so x=7+y