Question

Finding slopes and if they are parallel or not?

Answer 1

same slope means the lines are parallel

Answer 2

It is hard to see the coordinates of AB
I will do the slope for you for CD
coordinates for CD are (1,0) and (5,1)
using slope formula m = (0-1)/(1-5)=-1/-4=1/4
your slope for CD is m=(1/4)
do the slope for AB
if it is m=1/4 then they are parallel
becareful the y axis is marked by intervals of one
but the x axis is marked by intervals of two
lousy copy you are using (No wonder you are confused)
Had your teacher used a better copy or marked both intervals by one,
this would not be confusing for you