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Introduction To Graphs

Question
CBSEENMA8003512
Wired Faculty App

Write the coordinates of the vertices of each of these adjoining Figures.

Solution

(i)  The co-ordinates of :
          O are (0, 0)
          A are (2, 0)
          B are (2, 3)
          C are (0, 3)
(ii)  The co-ordinates of :
           P are (4, 3)
           Q are (6, 1)
           R are (6, 5)
           S are (4, 7)
(iii) The co-ordinates of:
            K are (10, 5)
            L are (7, 7)
            M are (10, 8)

Some More Questions From Introduction to Graphs Chapter

For an experiment in Botany, two different plants, plant A and B were grown under similar laboratory conditions. Their height were measured at the end of each week for 3 weeks. The results are shown by the following graph.

(a) How high was plant A after (i) 2 weeks and (ii) 3 weeks?
(b) How high was plant B after (i) 2 weeks and (ii) 3 weeks?
(c) How much did plant A grow during the 3rd week?
(d) How much did plant B grow from the end of the 2nd week to the end of the 3rd week?
(e) During which week did plant A grow most?
(f) During which week did plant B grow least?
(g) Were the two plants of the same height during any week shown here? Specify.

The following graph shows the temperature forecast and the actual temperature for each day of a week.
(a) On which days was the forecast temperature the same as the actual temperature?
(b) What was the maximum forecast temperature during the week?
(c) What was the minimum actual temperature during the week?
(d) On which day did the actual temperature differ the most from the forecast temperature?

Use the tables below to draw linear graphs.
The number of days a hill side city received snow in different years.

Population (in thousands) of men and women in a village in different years.

Can there be a time-temperature graph as follows? Justify your answer.

Ratana fell sick. Her doctor maintained a record of her hody temperature, taken every four hours. It is shown in the following time-temperature graph.
(a) During which period the temperature showed a rising trend?
(b) During which period the temperature showed a downward trend?
(c) At what time the temperature was highest?
(d) At what time the temperature was lowest?

Plot the following points on a graph sheet. Verify if they lie on a line:
(a) A (4, 0), B(4, 2), C(4, 6), D(4, 2.5)
(b) P(1, 1), Q(2, 2), R(3, 3), S(4, 4)
(c) K(2, 3), L(5, 3), M(5, 5), N(2, 5)

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