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

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Presentation transcript:

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

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 of x Plotting equations – A table of values Copyright © AQA and its licensors. All rights reserved. xy xy Example

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

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

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

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

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

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

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