1. the graph shows two lines, a and b.

graph down below

based on the graph, which statement is correct about the solution to the system of equations for lines a and b?
(4, 4) is the solution to line a but not to line b.
(4, 4) is the solution to both lines a and b.
(5, 1) is the solution to line b but not to line a.
(0, 2) is the solution to both lines a and b.

2. two lines, r and m, are represented by the following equations:

line r: 2x + 2y = 18
line m: x + y = 9

which statement is true about the solution to the set of equations?

it is (18, 9).
it is (9, 18).
there are infinitely many solutions.
there is no solution.