Recall that the equation of a line in slope-intercept form is given by
[tex]y=mx+b[/tex]Where m is the slope and b is the y-intercept of the line.
For the given case, we have
Slope = m = -8
y-intercept = b = 4
So, the equation is
[tex]y=-8x+4[/tex]The last option is the correct answer.