Open Middle®
Directions: Using the integers −9 to 9 at most one time each, place an integer in each box to create a system of equations and its solution.
Hint
How can you check whether your lines intersect at your solution algebraically? How can you check whether your lines intersect at your solution graphically?
Answer
There are many possible answers including:
-1x + 1y = 2
y = 3x + -8
Solution: (5, 7)
-1x + 1y = 2
y = 3x + -8
Solution: (5, 7)
Source: Robert Kaplinsky
