for that two lines be parallel the condition is that two slope be equal m1 = m2
Now you must calculate with point givens both slope , with the following formula
m= y2-y1/ x2-x1, for the firsts two points P( -7,0) and Q( 6,-5)
m = -5-0/6-(-7) , m = -5/13
for the seconds points R (-1,-1) and S( 0,-4)
m = -4-(-1)/ 0-(-1) = -3/1 = -3
the lines are not parallel, m1 ≠ m2
0.21 is less than half because a half is 0.5.
So 0.21 is less than 0.5 because the tenths place is less than 5 which makes 0.21 smaller than a half
If the sign looks like > or <, it excludes the number, if there is a line under the < or >, it is inclusive, which means at least, or at most. To display inclusive draw a circle on the point and fill it in, for exclusive, draw a circle and don't fill it in.
5 students used 1/8 each
5 · 1/8 = 5/8
Subtract 5/8 from 2 3/4 to get your answer
First, make it the same denominator: 8
2 3/4 = 2 6/8
2 6/8 - 5/8 = 2 1/8
There is about 2 yarn left. Exact amount left: 2 1/8
Hope this helps :)