The point of intersection is: - 3
Thinking (10 marks)
4. For which linear system is (-1,5) a solution? *Make sure to CHEC
answer and for full marks (3 each, 6 total)
a) 5x - 3y = -5
b) 3
3x + 2y = 4
2
=-5x -5
- 3
-3 2
-3
34 = 3x +4

Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample