Is m=2y-1 proportonial

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

What kind of bond pays interest which is exempt from tax?

Asphere has a diameter of 10 in. what is the volume of the sphere?