If a solution to a linear system of equations is no solution, then what must be true about the graph of the system?
a-the lines are perpendicular
b-the lines are parallel
c-the lines coincide
d-the lines intersect at only one point

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.