This is actually very simple. All you need to do is subtract 12-4 3/4 to get how much she ran in the second hour. This would equal 7 1/4 because 4 3/4+7 1/4=12. Hope I helped!!! Please 5 star and thank!
Y=2 has a slope of M=0 y=x has a slope of M=1 x=6 has an undefined slope y-3x=7 has a slope of M=3 y=-3x+2 has a slope of M=-3 x+y=1 has a slope of M=-1