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Introduction To Graphs

Question
CBSEENMA8003518
Wired Faculty App

Draw the graphs for the following tables of values, with suitable scales on the axes,
 Cost of apples

Solution

I. Draw x-axis and y-axis mutually perpendicular to each other.
II. Take a suitable scale.
III. Take the number of apples along the x-axis and mark the cost (in Rs) along the y-axis.
IV. Plot the points (1, 5), (2, 10), (3, 15), (4, 20) and (5, 25).
V. Joint the points.
We obtain the graph a straight line.

Some More Questions From Introduction to Graphs Chapter

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)

Draw the line passing through (2, 3) and (3, 2). Find the coordinates of the points at which this line meets the x-axis and y-axis.

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

State whether True or False. Correct that are false.

The number of litres of petrol you buy to fill a car’s petrol tank will decide the amount you have to pay. Which is the independent variable here? Think about it.

The following table gives the quantity of petrol and its cost.


Plot a graph to show the data.
Use the graph to find how much petrol can be purchased for Rs 800.

Draw the graphs for the following tables of values, with suitable scales on the axes,
 Cost of apples

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