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Question
For the pair of linear equations given below, draw graphs and then state, whether the lines drawn are parallel or perpendicular to each other.
y = x - 3
y = - x + 5
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Solution
To draw the graph of y = x - 3 and y = - x + 5 follows the steps:
First, prepare a table as below:
| X | - 1 | 0 | 1 |
| Y = x - 3 | - 4 | -3 | - 2 |
| Y = - x + 5 | 6 | 5 | 4 |
Now sketch the graph as shown:
From the graph it can verify that the lines are perpendicular.
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