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Question
Draw the graph of the equation 3x - 4y = 12.
Use the graph drawn to find:
(i) y1, the value of y, when x = 4.
(ii) y2, the value of y, when x = 0.
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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