Show that the two ordered pairs are solutions to the given equation. Then use the graph of the two points to determine another solution. Answers may vary.2x + y = 7; (3, 1), (4, -1)
What will be an ideal response?
Show that (3, 1) is a solution:
| 2x + y | = 7 |
| 2(3) + 1 | =? 7 |
| 6 + 1 | =? 7 |
| 7? | =? 7 | TRUE |
| 2x + y | = 7 |
| 2(4) + (-1) | =? 7 |
| 8 + (-1) | =? 7 |
| 7? | =? 7 | TRUE |
Mathematics
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