## Math 10 Chapter 9 - Part C

 1. From standard quadratic equations, variable is eliminated by cross multiplication method.a) Trueb) False
 2. A variable may be eliminated by comparison or by substitution method.a) Falseb) True
 3. If x/a + a/x = m and x3/a3 + a3/x3 = n, then relation free from x is m3 =na) Falseb) True
 4. If y = 2x and y = 2m then eliminant free from y is 2x = ma) Trueb) False
 5. If y = 2/t and y = 1/2s then relation free from y is 4s = ta) Trueb) False
 6. Eliminating 'm' from m2 + 1/m2 =x2 and m + 1/m = y we get x2 | y2 = 2a) Falseb) True
 7. Eliminating 'm' from m | z = 2 and m + y = 5 we get z + y = 3a) Falseb) True
 8. Eliminating 'x' from 1/x= 3m and x = 1/3n we get m = na) Falseb) True
 9. Eliminating t from y = 3t and yt = 1, we geta) y2 = 1 b) y2 = 3c) y = 3d) 1/y = 3
 10. Eliminating t from x+t =2p and y | t = 4qa) x-y=2p+4q b) x+y = 2p + 4qc) x+y = p +4qd) x-y=2p-4q
 11. The relation free from 'x' for equations x = 1/3n, x= m isa) 3m = n b) 3nm = 1c) 3n = md) nm = 3
 12. Eliminating 'm' for equations m + x = 3c and m | y = 3d, we geta) x-y = 3c+3d b) x+ y = 3c + 3dc) x-y = 3c-3dd) x + y = 3c-3d
 13. Eliminating 'm' from m3 = 4t and m = n/4a) n3 = 256t b) n = 16tc) n3 = 16td) n = 256t3
 14. Eliminating 'z' from x-z = 3 and y + z = 5a) x-y = 8 b) x + y = 8c) x + y= 2d) x � y = 2
 15. From equations ax2 + bx + c = 0 and lx2 + mx + n = 0 'x' can be eliminated by the method ofa) Application of Formula b) Substitutionc) Cross Multiplicationd) Comparison
 16. If x + 1/x = a + b and x | 1/x = a-b eliminant isa) a2 =b2 b) ab = 1c) a2 | b2 = 4d) a2+b2 = 4
 17. Eliminating x from x = a, 1/x = bwe geta) b/a = 1 b) ab = -1c) ab = 1d) a/b = 1
 18. The relation free of t from the equations a + t = 3 and b | t = 5a) a + b = 8 b) a � b = 8c) ab = 8d) a + b = 2
 19. If x = 2m and y = 8m then a relation free from 'm' isa) 4y = x b) 4x = yc) x = yd) x + y = 4
 20. If z = 7 and z + x = 9 then a relation independent of z isa) x = -2 b) x = -16c) x =16d) x = 2

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