The correct solutions are (5,2) and (6,-1), making the correct answer (c).
The given linear inequalities are:


Let's evaluate the given answer choices:
a. (-1,4) and (-2,1):
For (-1,4):
![\[ -3(-1) + 4 = 3 + 4 = 7 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/1k56k9yenkj4hudtoaw3z0w3ox6s34b6fz.png)
The first inequality is not satisfied (7 is not less than 1). Therefore, (-1,4) is not a solution.
For (-2,1):
![\[ -3(-2) + 1 = 6 + 1 = 7 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/hel7510fnnde464x9uph3w4l5mejeuqrxh.png)
The first inequality is not satisfied (7 is not less than 1). Therefore, (-2,1) is not a solution.
b. (1,1) and (3,3):
For (1,1):
![\[ -3(1) + 1 = -2 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/heuegelaipe33juc912ofbzm2ht4z1i0uj.png)
The first inequality is satisfied (-2 is less than 1).
For (3,3):
![\[ -3(3) + 3 = -6 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/p7jpynl8r9xtrgbf0d1p28m2rndmo73nh0.png)
The first inequality is satisfied (-6 is less than 1).
c. (5,2) and (6,-1):
For (5,2):
![\[ -3(5) + 2 = -13 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/erbhq0k180hkkteaujmx9d7592h8jb0um0.png)
The first inequality is satisfied (-13 is less than 1).
For (6,-1):
![\[ -3(6) - 1 = -19 \]](https://img.qammunity.org/2024/formulas/mathematics/high-school/9nf0tpkx2rjof4jt4d0iry3kgvfidjd2ez.png)
The first inequality is satisfied (-19 is less than 1).
Therefore, the correct solutions are (5,2) and (6,-1), making the correct answer (c).