Answer:
81
Step-by-step explanation:
Line j is parallel to line k.
So, the slope of those two straight lines will be the same.
So, y = mx + c and y = mx + c' are the equation of two parallel lines as the slopes of those lines are the same m.
Now, line j passes through points (6,63) and (5,-18).
Therefore, its slope will be [tex]\frac{-18-63}{5-6} = 81[/tex].
Hence, the slope of the line k will also be 81. ( Answer )
