Hi there! I will help you with a smile!
We are given the slope of the line and its y-intercept, so we can easily determine its equation (written in slope-intercept form)
Remember, slope-intercept form looks like so:
y=mx+b
Where m is the slope (8 in this case)
and b is the y-intercept (0)
Plug in the values:
y=8x+0
y=8x (Answer)
Hope it helps.
Ask me if you have any queries.
~Peaceful~