The answer is this:
y = 4/5x - 1
4²+x²=6²
16+x²=36
x²=20
x= √20
x= 2√5 or approximately 4.47214
Ella is about 4.5 meters away from her hook
If I'm not mistaken it's (3,-8)
If you just look up what those words mean then you just answer them. I hope this helped...