Answer:
1 has 1 solution
2 has one solution
3 has no solutions The lines are parallel
For the given set of numbers:
<span>{1,2,3,4, 5, 6, 7, 8, 9, 10}
the number of elements
n=10
the total number of subsets is given by:
2^10=1024
</span>
C is the correct answer
explanation: the opposite is the always the positive or negative of the number