Well you have to subtract -2 to both sides and it well look like Y= -2+13 and then y=x+4
Answer:
.925528227816363717263662772636
The answer for leading coefficient should be 1.
It appears that no graph photos have been uploaded, however, I have pasted the graph for the equation Y= -4 sqrt x.
https://www.symbolab.com/solver/step-by-step/y%3D-4%5Csqrt%7Bx%7D