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Question
Draw the graph of equation 3x – 4y = 12. Use the graph drawn to find:
- y1, the value of y, when x = 4.
- y2, the value of y, when x = 0.
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Solution
First, prepare a table as follows:
| X | –1 | 0 | 1 |
| Y | `-(15)/(4)` | – 3 | `-(9)/(4)` |
The graph of the equation can be drawn as follows:
From the graph, it can verify that
If x = 4 the value of y = 0
If x = 0 the value of y = –3.
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