Plug more than one point into the original equations, and check to show that the work equations can have more than one solution. The equations are 7x + 3 = 7x + 3 and 3(4x + 8) = 4 (3x + 6).
1. 7(2) + 3 = 7(2) + 3
14 + 3 = 14 + 3
17 = 17 (True)
2. 7(0) + 3 = 7(0) + 3
0 + 3 = 0 + 3
3 = 3 (True)
3. 3(4(1) + 8) = 4(3(1) + 6)
3(4 + 8) = 4(3 + 6)
3(12) = 4(9)
36 = 36 (True)
4. 3(4(-1) + 8) = 4(3(-1) + 6)
3(-4 + 8) = 4(-3 + 6)
3(4) = 4(3)
12 = 12 (True)
Therefore, the original equations have more than one solution.