Answer:
y = 8x
Explanation:
The first thing you have to observe is the graph looks like it goes through (0,0). If that is true, and an enlargement seems to confirm that, then the equation is of the form y = kx. It does not have a pure number term.
So the only thing you have to do is determine the value of k.
You can do that by choosing a point on the graph.
When x = 2, it looks like y = 16. So put those two values in.
y = kx
16 = 2k Divide by 2
16/2 = 2k/2 Do the division
8 = k
So what you should enter into the box is
y = 8x