Answer in Brief

The following table shows the number of patients discharged from a hospital with HIV diagnosis in different years:

Years: |
2002 | 2003 | 2004 | 2005 | 2006 |

Number of patients: |
150 | 170 | 195 | 225 | 230 |

Represent this information by a graph.

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#### Solution

Here, years is an independent variable and the number of patients is a dependent variable. So, we take years on the *x*-axis and the number of patients on the *y*-axis.

Let us choose the following scale:

On *x*-axis: 2 cm = 1 year

On y-axis: 1 cm = 10 patients

Also, let us assume that on the *x*-axis, origin (O) represents 2001 and on the *y*-axis, origin (O) represents 120, i.e. O (2001, 120).

Now, let us plot (2002, 150), (2003, 170), (2004, 195), (2005, 225), (2006, 230). These points are joined to get the graph representing the given information as shown in the figure below.

Concept: Concept of a Line Graph

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