Answer:
y=-9x+5
Step-by-step explanation:
first you need to know the point-slope formula: y-y1=m(x-x1)
from there you plug in and solve:
y-5=-9(x-0)
y-5=-9x+0 (distribute the -9 to get this)
y=-9x+5 (add 5 to both sides to get y alone)