Answer:
The bottom left one
Step-by-step explanation:
They are the only graph that has one output for each x value
Answer:
Step-by-step explanation:


Answer:
Step-by-step explanation:
Answer:
I think that what you are trying to show is: If
is irrational and
is rational, then
is rational. If so, a proof can be as follows:
Step-by-step explanation:
Suppose that
is a rational number. Then
and
can be written as follows


Hence we have that

Then

This is a contradiction because we assumed that
is an irrational number.
Then
must be an irrational number.