Solution

40461

Problem / game
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First name
Louis d M
School
EMS
Country
United Kingdom, UK
Age
16

It's a sine curve, and at its highest point the y coordinate is 5, so the curve has the equation y=5sin(x+a), where we need to find a. Adding this constant will shift the curve to the left/right, which is what we need.
When x=0, y=4; we can substitute these in to give:
5sin(a)=4
sin(a)=4/5
a=arcsin(4/5)
So the equation of the curve is y = 5sin(x+arcsin(4/5)).