1. 1 of x Plotting two variable equations Mathematics for A-level Science Copyright © AQA and its licensors. All rights reserved.

2. 2 of x Why is plotting important? Copyright © AQA and its licensors. All rights reserved. Plotting equations gives us a sense of what a relationship looks like. We can then easily see properties of the equation as well as compare it to other equations. a : y = 3x + 4 b : y = x 2 – 2x – 3

3. 3 of x Plotting equations – A table of values Copyright © AQA and its licensors. All rights reserved. xy 4 02 10 2-2 xy 0 1 2 Example

4. 4 of x Plotting an equation from a table of values Once you have completing your table of values, draw neatly and label a pair of axis. Copyright © AQA and its licensors. All rights reserved. Once you have done this, plot the coordinates present in your table of values onto the graph. If they form a straight line, use a ruler to connect the coordinates. Otherwise, draw a curve freehand. xy 4 02 10 2-2

5. 5 of x Example: GCSE Mathematics Copyright © AQA and its licensors. All rights reserved.

6. 6 of x Example: GCSE Mathematics Copyright © AQA and its licensors. All rights reserved. -5 17 10

7. 7 of x Example: GCSE Mathematics Copyright © AQA and its licensors. All rights reserved.

8. 8 of x Example: GCSE Mathematics Copyright © AQA and its licensors. All rights reserved.

9. 9 of x Exam paper example: GCSE Mathematics Copyright © AQA and its licensors. All rights reserved.

10. 10 of x Exam paper example: GCSE Mathematics Copyright © AQA and its licensors. All rights reserved. -5 3