has 7/x^2 been dilated from the y-axis by a factor of 1/7 or 7?
I hope you got more from this thread than just an answer.
In other words, I hope you learnt something from it.
Since I live in hope, I will suggest that you try applying what you've learnt from it.
Alternatively, at least give your thoughts on what you think the answer might be and why.
I assume you mean dilated from ,
Let x' and y' be the image points after dilation and x, y be the original points before dilation.
Letting,
That means and
and
Therefore, as each new image point y' is 7 times the original point y, there has been a dilation of 7 from the x-axis.