To calculate Mr. Brown's salary after teaching for 3, 4, and 5 years using the function \( s = 1,500y + 40,000 \):
1. **For 3 years (y = 3)**:
\[
s = 1,500(3) + 40,000 = 4,500 + 40,000 = 44,500
\]
2. **For 4 years (y = 4)**:
\[
s = 1,500(4) + 40,000 = 6,000 + 40,000 = 46,000
\]
3. **For 5 years (y = 5)**:
\[
s = 1,500(5) + 40,000 = 7,500 + 40,000 = 47,500
\]
The points on the graph representing how much Mr. Brown will make for teaching for 3, 4, and 5 years are:
- (3, 44,500)
- (4, 46,000)
- (5, 47,500)
Therefore, the correct response is:
**(3, 44,500), (4, 46,000), and (5, 47,500)**.