2. Press Esc to exit Ian Munro Plotting a Straight Line Graph From Supplied Data NEXT

3. Press Esc to exit Ian Munro We will work through the following Draw the graph of the following data. x-3-2-101234 y-11-9-7-5-3-113 NEXT

4. Press Esc to exit Ian Munro Draw the Axes These are the two lines at right angles to each other which give us our scale. First the x-axis and it’s scale. Remember it goes from –3 to +4 x

5. Press Esc to exit Ian Munro Draw the Axes These are the two lines at right angles to each other which give us our scale. First the x-axis and it’s scale. Remember it goes from –3 to +4 x The x-axis is drawn and the markings put on

6. Press Esc to exit Ian Munro Draw the Axes x These are the two lines at right angles to each other which give us our scale. First the x-axis and it’s scale. Remember it goes from –3 to +4 -3-201234 The numbers are then put on NEXT

7. Press Esc to exit Ian Munro Draw the Axes x Now draw the y-axis and its scale. Remember that it goes from –11 to +3 -3-201234

8. Press Esc to exit Ian Munro Draw the Axes x Now draw the y-axis and its scale. Remember that it goes from –11 to +3 -3-201234 y The y-axis is now put on

9. Press Esc to exit Ian Munro Draw the Axes x Now draw the y-axis and its scale. Remember that it goes from –11 to +3 -3-201234 y And the markings put on

10. Press Esc to exit Ian Munro Draw the Axes x Now draw the y-axis and its scale. Remember that it goes from –11 to +3 -3-201234 y 4 2 -2 -4 -6 -8 -10 -12 -14 Then the numbers NEXT

11. Press Esc to exit Ian Munro Now that we have drawn the axes, we can start to think about the plotting of the points. We have to consider the coordinates in pairs. The first pairs of coordinates are (-3, -11) This means we measure 3 units along the x- axis to the left of the 0, since the value has a minus sign, (-3) And we measure 11 units down the y-axis, again since the value has a minus sign. NEXT

12. Press Esc to exit Ian Munro Remembering that everything to the RIGHT and UPWARDS is positive And everything the the LEFT and DOWNWARDS is negative

13. Press Esc to exit Ian Munro Remembering that everything to the RIGHT and UPWARDS is positive And everything the the LEFT and DOWNWARDS is negative Measurements in these DIRECTIONS are POSITIVE Measurements in these DIRECTIONS are NEGATIVE + + - - (+, +) (–, +) (–, –) (+, –) Insert the axis and the signs of the coordinates NEXT

14. Press Esc to exit Ian Munro To plot the point (-3, -11) (-3, -11) Put in the points on the graph (-3, -11) x -3 -201234 y -11 -9-7-5-313 NEXT

15. Press Esc to exit Ian Munro To plot the point (-2, -9) (-2, -9) Put in the points on the graph (-2, -9) x-3 -2 01234 y-11 -9 -7-5-313

16. Press Esc to exit Ian Munro To plot the point (-1, -7) (-1, -7) Put in the points on the graph (-1, -7) x-3-2 01234 y-11-9 -7 -5-313

17. Press Esc to exit Ian Munro To plot the point (0, -5) (0, -5) Put in the points on the graph (0, -5) x-3-2 0 1234 y-11-9-7 -5 -313

18. Press Esc to exit Ian Munro To plot the point (1, -3) (1, -3) Put in the points on the graph (1, -3) x-3-20 1 234 y-11-9-7-5 -3 13

19. Press Esc to exit Ian Munro To plot the point (2, -1) (2, -1) Put in the points on the graph (2, -1) x-3-201 2 34 y-11-9-7-5-3 13

20. Press Esc to exit Ian Munro To plot the point (3, 1) (3, 1) Put in the points on the graph (3, 1) x-3-2012 3 4 y-11-9-7-5-3 1 3

21. Press Esc to exit Ian Munro To plot the point (4, 3) (4, 3) Put in the points on the graph (4, 3) x-3-20123 4 y-11-9-7-5-31 3

22. Press Esc to exit Ian Munro To plot the point (4, 3) Put in the points on the graph (4, 3) x-3-201234 y-11-9-7-5-313

23. Press Esc to exit Ian Munro All the points have now been plotted All the points have been plotted NEXT

24. Press Esc to exit Ian Munro Once all the points have been plotted, you should draw the BEST STRAIGHT LINE, which best shows the data so that further work can be done on it. NEXT

25. Press Esc to exit Ian Munro The points are plotted with a line joining them. NEXT

26. Press Esc to exit Ian Munro You should now be able to plot a straight line graph. NEXT

27. Press Esc to exit Ian Munro Now You try SAQ 1 on Page 3