Question 823338
m = (y2 - y1)/(x2 - x1)


3/4 = (8-k)/(k-(-4))


3/4 = (8-k)/(k+4)


3(k+4) = 4(8-k)


3k+12 = 32-4k


3k = 32-4k-12


3k+4k = 32-12


7k = 32-12


7k = 20


k = <font color="red">20/7</font>