The following graph shows the temperature of a patient in a hospital, recorded every hour.
a) What was the patient’s temperature at 1 p.m.?
b) When was the patient’s temperature 38.5⁰ C?
c) The patient’s temperature was the same two times during the period What were the two times?
d) What was the temperature at 1.30 p.m.? How did you arrive at your answer?
e) During which periods did the patient’s temperature show an upward trend?

Solution:

The horizontal axis represents Time and the vertical represents Temperature in °C. We can find the value of ‘Temperature’ on the vertical axis according to the given value of ‘Time’ on the horizontal axis value or vice versa.

a) At 1 pm, the patient’s temperature was 36.5°C.

b) The patient’s temperature was 38.5°C at 12noon.

c) The patient’s temperature was 36.5 ⁰C at 1 pm and 2 pm

d) The graph between the times 1 pm and 2 pm is parallel to the x-axis. The temperature at 1 pm and 2 pm is 36.5°C. So, the temperature at 1:30 pm is 36.5°C.

e) During 9 am to 10 am, 10 am to 11 am, 2 pm to 3 pm, the patient’s temperature showed an upward trend.

☛ Check: NCERT Solutions for Class 8 Maths Chapter 15

Video Solution:

The following graph shows the temperature of a patient in a hospital, recorded every hour.a) What was the patient’s temperature at 1 p.m.?b) When was the patient’s temperature 38.50 C?c) The patient’s temperature was the same two times during the period What were the two times?d) What was the temperature at 1.30 p.m.? How did you arrive at your answer?e) During which periods did the patient’s temperature show an upward trend?  

Class 8 Maths NCERT Solutions Chapter 15 Exercise 15.1 Question 1

Summary:

From the following graph a) 36.5°C b) 12noon c) 1 pm and 2 pm d) 36.5°C e) 9 am to 10 am, 10 am to 11 am, 2 pm to 3 pm

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