10th cbse pair of linear equations

3x/2 - 5y/2 = -2

x/3 -y/2 = 136

• 3,2

• 2,3

• 2,2

• 1,1

x + y = 2.2

0.8/(2x - 4y) = -1

• 1,2

• 1.3 , 2.2

• 2.2,1.3

• 2.2,2.2

solve by cross multification method

3x + 2y = 10

2x +y = 4

• -2,8

• 8,-2

• 2,8

• 8,2

2/x + 5/y = 1

60/x - 20/y = 13

• 10,4

• 4,10

• -4,10

• 4,4

A part of monthly Hostel charge is fixed and the remaining depends on the number of days one has taken food in the mess. When Swati takes food for 20 days, she has to pay 3000 as hostel charges whereas, Mansi who takes food for 25 days pays ? 3500 as hostel charges. Find the fixed charges and the cost of food per day.

• 100,1000

• 1000,100

• 100,100

• 1000,1000

Draw the graphs of the pair of equations  x + 2y = 5 and 2x-3y = – 4. Also find the points where the lines meet the x-axis.

• (0,5)(-2,0)

• (0,5)(-2,0)

• (5,0)(-2,0)

• (0,5)(-2,2)

Find whether the lines representing the following pair of linear equations intersect at a point, are parallel or coincident: 2x – 3y + 6 = 0,4x – 5y + 2 = 0

• unique solution

• parallel

• coincident

• none

4 chairs and 3 tables cost ? 2100 and 5 chairs and 2 tables cost ? 1750. Find the cost of one chair and one table separately

• 250,500

• 150,500

• 100,500

• 500,150

5/(x-1) + 1/(y-2) = 2

6/(x-1) - 3/(y-2) = 1

• 4,4

• 5,5

• 5,4

• 4,5

6(ax + by) = 3a + 2b

6(bx – ay) = 3b -2a

• 1/3,1/2

• 1/2,1/3

• 3,2

• 2,3