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Rs Aggarwal 2017 Solutions for Class 8 Math Chapter 25 Graphs are provided here with simple step-by-step explanations. These solutions for Graphs are extremely popular among Class 8 students for Math Graphs Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Rs Aggarwal 2017 Book of Class 8 Math Chapter 25 are provided here for you for free. You will also love the ad-free experience on Meritnation’s Rs Aggarwal 2017 Solutions. All Rs Aggarwal 2017 Solutions for class Class 8 Math are prepared by experts and are 100% accurate.

Page No 262:

Question 1:

On a graph paper draw the coordinate axes X'OX and YOY', and plot each of the following points:
(i) A(4, 3)
(ii) B(2, 6)
(iii) C(−3, 5)
(iv) D(−5, 2)
(v) E(−2, −3)
(vi) F(−5, −3)
(vii) G(5, −4)
(viii) H(3, −3)

Answer:

Let X'OX and YOY' be the coordinate axes.

 
i On the x-axis, take 4 units to the right of the y axis; and then on the y-axis, take 3 units above the x-axis.Thus, we obtain the point A4,3ii On the x-axis, take 2 units to the right of the y-axis; and then on the y-axis, take 6 units above the x-axis.Thus, we obtain the point B2,6iii On the x-axis, take 3 units to the left of the y-axis; and then on the y-axis, take 5 units above the x-axis.Thus, we obtain the point C-3,5iv On the x-axis, take 5 units to the left of the y-axis; and then on the y-axis, take 2 units above the x-axis.Thus, we obtain the point D-5,2v On the x-axis, take 2 units to the left of the y-axis; and then on the y-axis, take 3 units below the x-axis.Thus, we obtain the point E-2,-3vi On the x-axis, take 5 units to the left of the y-axis; and then on the y-axis, take 3 units below the x-axis.Thus, we obtain the point F-5,-3vii On the x-axis, take 5 units to the right of the y-axis; and then on the y-axis, take 4 units below the x-axis.Thus, we obtain the point G5,-4viii On the x-axis, take 3 units to the right of the y-axis; and then on the y-axis, take 3 units below the x-axis.Thus, we obtain the point H3,-3



Page No 266:

Question 1:

(a) Draw the graph of the function y = 3x.
(b) From the graph, find the value of y, when
(i) x = 3
(ii) x = 5
(iii) x = 6

Answer:

a The given function is y=3x.For some different values of x, the corresponding values of y are given below:
 

x 0 1 2
y 0 3 6



On a graph paper, plot the points O0,0, A1,3 and B2,6. Join them successively to obtain the required graph.



bReading off from the graphi On the x-axis, take the point L at x=3.Draw LP⊥x-axis, meeting the graph at P.Clearly, PL=9 units∴ x=3⇒y=9ii On the x-axis, take the point M at x=5.Draw MQ⊥x-axis, meeting the graph at Q.Clearly, QM=15 units∴ x=5⇒y=15iii On the x-axis, take the point N at x=6.Draw RN⊥x-axis, meeting the graph at R.Clearly, RN=18 units∴ x=6⇒y=18

Page No 266:

Question 2:

(a) Draw the graph of the function P = 4x.
(b) From the graph, find the value of P, when
(i) x = 3
(ii) x = 4
(iii) x = 6

Answer:

a The given function is P=4x.For some different values of x, the corresponding values of P are given below:
 

x 0 1 2
P 0 4 8



On a graph paper, plot the points O0,0, A1,4 and B2,8.Join them successively to obtain the required graph.



bReading off from the graphi On the x-axis, take the point L at x=3.Draw LR⊥x-axis, meeting the graph at R.Clearly, RL=12 units∴ x=3⇒P=12ii On the x-axis, take the point M at x=4.Draw MS⊥x-axis, meeting the graph at S.Clearly, SM=16 units∴ x=4⇒P=16iii On the x-axis, take the point N at x=6.Draw NT⊥x-axis, meeting the graph at T.Clearly, TN=24 units∴ x=6⇒P=24



Page No 267:

Question 3:

(a) Draw the graph of the function A = x2.
(b) From the graph, find the value of A, when
(i) x = 2
(ii) x = 3
(iii) x = 4

Answer:

a The given function is A=x2.For some different values of x, the corresponding values of A are given below:
 

x 0 1 2
A 0 1 4



On a graph paper, plot the points O0,0, S1,1 and P2,4. Join them successively to obtain the required graph.



bReading off from the graphi On the x-axis, take the point L at x=2.Draw LP⊥x-axis, meeting the graph at P.Clearly, PL=4 units∴ x=2⇒A=4ii On the x-axis, take the point M at x=3.Draw MQ⊥x-axis, meeting the graph at Q.Clearly, QM=9 units∴ x=3⇒A=9iii On the x-axis, take the point N at x=4.Draw RN⊥x-axis, meeting the graph at R.Clearly, RN=16 units∴ x=4⇒A=16

Page No 267:

Question 1:

Tick (✓) the correct answer:
In which of the following quadrants does the point P(3, 6) lie?
(a) I
(b) II
(c) III
(d) IV

Answer:

(a)Since the signs of coordinates are +,+, the point P3,6 lies in the I quadrant. 

Page No 267:

Question 2:

Tick (✓) the correct answer:
In which of the following quadrants does the point (−7, −1) lie?
(a) I
(b) II
(c) III
(d) IV

Answer:

(c) IIISince the signs of coordinates are -,-, the point -7,-1 lies in the III quadrant.

Page No 267:

Question 3:

Tick (✓) the correct answer:
In which of the following quadrants does the point A(2, −3) lie?
(a) I
(b) II
(c) III
(d) IV

Answer:

(d) IVSince the signs of the coordinates are +,-, the point A2,-3 lies in the IV quadrant. 

Page No 267:

Question 4:

Tick (✓) the correct answer:
In which of the following quadrants does the point Q(−4, 1) lie?
(a) I
(b) II
(c) III
(d) IV

Answer:

(b) IISince the signs of coordinates are -,+, the point Q-4,1 lies in the II quadrant. 

Page No 267:

Question 5:

Tick (✓) the correct answer:
The obscissa of a point is its distance from the
(a) origin
(b) x-axis
(c) y-axis
(d) none of these

Answer:

(c) y-axisThe abscissa of a point is its distance from the y-axis.

Page No 267:

Question 6:

Tick (✓) the correct answer:
The graph of y = a is
(a) the x-axis
(b) the y-axis
(c) a line parallel to the y-axis
(d) a line parallel to the x-axis

Answer:

(d) a line parallel to the x-axis The graph of y=a is a line parallel to the x-axis.

Page No 267:

Question 7:

Tick (✓) the correct answer:
The equation representing the y-axis is
(a) x = 0
(b) y = 0
(c) x = a
(d) y = a

Answer:

(a) x=0The equation representing the y-axis is x=0.



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