1. The pair of equations 3x + 4y = 18 and 4x + y = 24 has
(a) infinite number of solutions (b) unique solution
(c) no solution
(d) cannot say anything
2. If the pair of equations 2x + 3y = 7 and k
= 12 have no solution, then the value of k is:
(b) – 3
(0) 3
(d)
(d) none of these
3. The equations x-y=0.9 and 2 have the solution:
x+y
(a) x = 5 and y = a (b) x = 3, 2 and y = 2,3 (c) x = 3 and y = 2
4. If bx + ay = a? + b2 and ax - by = 0, then the value of x - y cquals:
(a) a-b (b) b-a
(c) a'-b2
(d) b? +a?
5. If 2x + 3y = 0 and 4x - 3y = 0, then x + y equals:
(a) 0
(b)-1
(C) 1
(d) 2
6. If Vax-Jby=b-a and Vbx-Vay=0, then the value of x, y is:
(a) a + b (b) a - b (c) Vab
(d) - Vab
w
7.
+
5 4
--==-2, then x + y equals:
=
3
and
(a)
1
Good Luck
8. If 31x + 43y = 117 and 43 + 31y = 105, then value of x - y is:
(a) 1 / 3 (b)-3 (c) 3 (d) – 1 2
9. If 19x - 17y= 55 and 17x - 19y = 53, then the value of x - y is:
(a) / 3 (b) – 3 (c) 3
(d) 5
10. If
+ y =0.8 and
1
=10, then the value of x + y is:
(a) 1
(b) - 0.8
(c) 0.6
(d) 0.5
11. If (6, k) is a solution of the equation 3x + y - 22 = 0, then the value of k is:
(a) 4
(b)-4
(c) 3
(d)-3
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Answers
Answer:
(b) - 0.8
(c) 0.6
(d) 0.5
11. If (6, k) is a solution of the equation 3x + y - 22 = 0, then the value of k is:
(a) 4
(b)-4
(c) 3
(d)-3
Step-by-step explanation:
(b) - 0.8
(c) 0.6
(d) 0.5
11. If (6, k) is a solution of the equation 3x + y - 22 = 0, then the value of k is:
(a) 4
(b)-4
(c) 3
(d)-3
Ok
Answer:
Step-by-step explanation:
1. The pair of equations 3x + 4y = 18 and 4x + y = 24 has
(a) infinite number of solutions (b) unique solution
(c) no solution
(d) cannot say anything
2. If the pair of equations 2x + 3y = 7 and k
= 12 have no solution, then the value of k is:
(b) – 3
(0) 3
(d)
(d) none of these
3. The equations x-y=0.9 and 2 have the solution:
x+y
(a) x = 5 and y = a (b) x = 3, 2 and y = 2,3 (c) x = 3 and y = 2
4. If bx + ay = a? + b2 and ax - by = 0, then the value of x - y cquals:
(a) a-b (b) b-a
(c) a'-b2
(d) b? +a?
5. If 2x + 3y = 0 and 4x - 3y = 0, then x + y equals:
(a) 0
(b)-1
(C) 1
(d) 2
6. If Vax-Jby=b-a and Vbx-Vay=0, then the value of x, y is:
(a) a + b (b) a - b (c) Vab
(d) - Vab
w
7.
+
5 4
--==-2, then x + y equals:
=
3
and
(a)
1
Good Luck
8. If 31x + 43y = 117 and 43 + 31y = 105, then value of x - y is:
(a) 1 / 3 (b)-3 (c) 3 (d) – 1 2
9. If 19x - 17y= 55 and 17x - 19y = 53, then the value of x - y is:
(a) / 3 (b) – 3 (c) 3
(d) 5
10. If
+ y =0.8 and
1
=10, then the value of x + y is:
(a) 1
(b) - 0.8
(c) 0.6
(d) 0.5
11. If (6, k) is a solution of the equation 3x + y - 22 = 0, then the value of k is:
(a) 4
(b)-4
(c) 3
(d)-3
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