Answer: (1, -2)
Step-by-step explanation:
If you think about that plot from two lines crossed each together, so I have a deal for you, that answer might be (1, -2).
Answer:
r = -6
6r + 7 = 13 + 7r
-6r both sides
7 = 13 + r
-7 both sides
r + 6 = 0
-6 both sides