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प्रश्न
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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उत्तर
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.

संबंधित प्रश्न
The following graph shows the temperature of a patient in a hospital, recorded every hour.

- What was the patient’s temperature at 1 p.m.?
- When was the patient’s temperature 38.5°C?
- The patient’s temperature was the same two times during the period given. What were these two times?
- What was the temperature at 1.30 p.m.? How did you arrive at your answer?
- During which periods did the patients’ temperature showed an upward trend?
The following graph shows the temperature forecast and the actual temperature for each day of a week.

- On which days was the forecast temperature the same as the actual temperature?
- What was the maximum forecast temperature during the week?
- What was the minimum actual temperature during the week?
- On which day did the actual temperature differ the most from the forecast temperature?
Can there be a time-temperature graph as follows? Justify your answer.


A graph that displays data that changes continuously over periods of time is ______.
A line graph can also be a whole unbroken line.
Study the given graph and complete the corresponding table below.

Study the given graph and complete the corresponding table below.

Plot a line graph for the variables p and q where p is two times q i.e, the equation is p = 2q. Then find.
- the value of p when q = 3
- the value of q when p = 8
Plot a line graph for the variables p and q where p is two times q i.e, the equation is p = 2q. Then find the value of q when p = 8
