(-7 -5) (-1 -2) and (-1 -5) rotated by 90 degree counterclockwise rotation

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.

Which equation represents the function on the graph?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11