## Book: RD Sharma - Mathematics

### Chapter: 27. Introduction to Graphs

#### Subject: Maths - Class 8th

##### Q. No. 6 of Exercise 27.2

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##### Draw the temperature-time graph in each of the following cases:(i)Time (in hours)7:009:0011:0013:0015:0017.0019:0021:00Temperature (°F) in1001011041021009910098(ii)Time (in hours)8:0010:0012:0014:0016:0018:0020:00Temperature (°F) in1001011041039998100

(i) Here, we take time on the x-axis and temperature on the y-axis.

Let us choose the following scale:
On x-axis: 1 cm = 1 hour
On y-axis: 1 cm = 1 °F

Now, let us plot the given points. These points are joined to get the graphs representing the given information as shown in the figures below.

Scale:

On x axis: 1cm = 1 hour

On y-axis: 1 cm = 1 °F

(ii) Here, we take time on the x-axis and temperature on the y-axis.

Let us choose the following scale:
On x-axis: 1 cm = 2 hour
On y-axis: 1 cm = 1 °F

Now, let us plot the given points. These points are joined to get the graphs representing the given information as shown in the figures below.

Scale:

On x axis: 1cm = 2 hour

On y-axis: 1 cm = 1 °F

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