Sadhana Bhadoriya

Ex – 3.1 Que No. 4(i) Q.4) Which of the following pairs of linear equations are consistent/inconsistent? If consistent, obtain the solution graphically: (i). x + y = 52x + 2y = 10 Solution:–

Ex – 3.1 Que No. 3(v) Q.3) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the following pair of linear equations are consistent, or inconsistent. (v). 4/3 x + 2y = 82x + 3y = 12 Solution:–

Ex – 3.1 Que No. 3(iv) Q.3) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the following pair of linear equations are consistent, or inconsistent. (iv). 5x – 3y = 11–10x + 6y = –22 Solution:–

Ex – 3.1 Que No. 3(iii) Q.3) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the following pair of linear equations are consistent, or inconsistent. (iii). 3/2 x + 5/3 y = 79x – 10y = 14 Solution:–

Ex – 3.1 Que No. 3(ii) Q.3) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the following pair of linear equations are consistent, or inconsistent. (ii). 2x – 3y = 84x – 6y = 9 Solution:–

Ex – 3.1 Que No. 3(i) Q.3) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the following pair of linear equations are consistent, or inconsistent. (i). 3x + 2y = 52x – 3y = 7 Solution:–

Ex – 3.1 Que No. 2(iii) Q.2) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincident: (iii). 6x – 3y + 10 = 02x – y + 9 = 0 Solution:–

Ex – 3.1 Que No. 2(ii) Q.2) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincident: (ii). 9x + 3y + 12 = 018x + 6y + 24 = 0 Solution:–

Ex – 3.1 Que No. 2(i) Q.2) On comparing the ratios a1/a2, b1/b2 and c1/c2, find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincident: (i). 5x – 4y + 8 = 0 7x + 6y – 9 = 0 Solution:–

Ex – 3.1 Que No. 1(ii) Q.1) Form the pair of linear equations in the following problems, and find their solutions graphically. (ii). 5 pencils and 7 pens together cost 50, whereas 7 pencils and 5 pens together cost 46. Find the cost of one pencil and that of one pen. Solution:–