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WEEK 4
TOPIC: QUADRATIC EQUATION
CONTENT:
- Revision of linear graph and drawing quadratic graph
- Obtaining roots from a quadratic graph
- Finding an equation from a given graph
- Application of quadratic equation to real life situations
LINEAR GRAPHS
Recall that any equation whose highest power of the unknown is 1 is a linear equation. To draw the graph of a linear equation, we need to
- Make a table of value for the equation
- Plot the graph of the linear equation
Example: Draw the graph of
Solution; y = x – 1
| -2 | 0 | 2 | |
| -1 | -1 | -1 | |
| -3 | -1 | 1 |
Scale: 2cm to 1unit on both axes
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