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Math 10 Chapter 9 - Part C
1.
From standard quadratic equations, variable is eliminated by cross multiplication method.
a) True
b) False
2.
A variable may be eliminated by comparison or by substitution method.
a) False
b) True
3.
If x/a + a/x = m and x
3
/a
3
+ a
3
/x
3
= n, then relation free from x is m
3
=n
a) False
b) True
4.
If y = 2x and y = 2m then eliminant free from y is 2x = m
a) True
b) False
5.
If y = 2/t and y = 1/2s then relation free from y is 4s = t
a) True
b) False
6.
Eliminating 'm' from m
2
+ 1/m
2
=x
2
and m + 1/m = y we get x
2
| y
2
= 2
a) False
b) True
7.
Eliminating 'm' from m | z = 2 and m + y = 5 we get z + y = 3
a) False
b) True
8.
Eliminating 'x' from 1/x= 3m and x = 1/3n we get m = n
a) False
b) True
9.
Eliminating t from y = 3t and yt = 1, we get
a) y
2
= 1
b) y
2
= 3
c) y = 3
d) 1/y = 3
10.
Eliminating t from x+t =2p and y | t = 4q
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a) x-y=2p+4q
b) x+y = 2p + 4q
c) x+y = p +4q
d) x-y=2p-4q
11.
The relation free from 'x' for equations x = 1/3n, x= m is
a) 3m = n
b) 3nm = 1
c) 3n = m
d) nm = 3
12.
Eliminating 'm' for equations m + x = 3c and m | y = 3d, we get
a) x-y = 3c+3d
b) x+ y = 3c + 3d
c) x-y = 3c-3d
d) x + y = 3c-3d
13.
Eliminating 'm' from m
3
= 4t and m = n/4
a) n
3
= 256t
b) n = 16t
c) n
3
= 16t
d) n = 256t
3
14.
Eliminating 'z' from x-z = 3 and y + z = 5
a) x-y = 8
b) x + y = 8
c) x + y= 2
d) x � y = 2
15.
From equations ax
2
+ bx + c = 0 and lx
2
+ mx + n = 0 'x' can be eliminated by the method of
a) Application of Formula
b) Substitution
c) Cross Multiplication
d) Comparison
16.
If x + 1/x = a + b and x | 1/x = a-b eliminant is
a) a
2
=b
2
b) ab = 1
c) a
2
| b
2
= 4
d) a
2
+b
2
= 4
17.
Eliminating x from x = a, 1/x = bwe get
a) b/a = 1
b) ab = -1
c) ab = 1
d) a/b = 1
18.
The relation free of t from the equations a + t = 3 and b | t = 5
a) a + b = 8
b) a � b = 8
c) ab = 8
d) a + b = 2
19.
If x = 2m and y = 8m then a relation free from 'm' is
a) 4y = x
b) 4x = y
c) x = y
d) x + y = 4
20.
If z = 7 and z + x = 9 then a relation independent of z is
a) x = -2
b) x = -16
c) x =16
d) x = 2
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