Which of the graphs is the graph of the function x + y = 3? Make a table of values then see which graph corresponds to your table.
Table of values:
x |
y |
-2 |
2 |
-1 |
2.5 |
0 |
3 |
1 |
3.5 |
2 |
4 |
The only graph that goes through all of these points is graph B.