Answer:
y = -x
Explanation:
The slopes of parallel lines are equal
y = -x +5
The slope is -1 so the parallel also has a slope of -1
The equation of a line in slope intercept form is
y = mx+b
y = -1x +b
Substituting in the point (4,-4)
-4 = -1(4) +b
-4 = -4+b
Add 4 to each side
-4+4 = -4+4 +b
0=b
y = -x