One solution
Not on worksheet
y = x + 3
y = 4x + 21
(-6, -3)
Not on worksheet
3x + 5y = -18
y = -2x - 12
(-6, 0)
Not on worksheet
-6x + 3y = -12
y = 4x - 16
(6, 8)
Worksheet question #1
-9x + y = -5
-3x - y = -7
(1, 4)
Worksheet question #3
-3x + 3y = 4
x - y = 6
No solution
Worksheet question #5
-18x - 3y = 8
6x + y = -11
No solution
Worksheet question #2
8x - y = 30
x - 9y = -14
(4, 2)
Worksheet question #4
-4x - 2y = 8
2x + y = -4
Infinite number of solutions
Worksheet question #6
-3x - 9y = 15
x + 3y = -5
Infinite number of solutions