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Find the inverse of:
5
2x
52
x
Find the constant of variation if it is a direct variation:
x = 10 & y = 2050
K = 205
If a spring stretches 20cmwith a force of 5 Newtons,
what is the constantof variation?
K = 4
Find ‘k’ if inverse variationwhen given;
x = 10 & y = 12
K = 120
(g+h)(x)
24 2x
24 2x
( k – i )(7)
2
What is the domain:
( )hx
f
3:
2R x
f(x) h(x)
3 26 9x x
gh(-4)
864
: ( )f
Find domain of xk
: 2R x
(j – f )(x)
2x x
fh(1)+j(4)
20
If ‘y’ varies directlywith ‘x’ when
y=5 and x=25, find the equation of
direct variation.
1
5y x
( )f g x
22 7x
( )g h x
49 2x
( )h i x
3 6x
1(2)i
2
(2)g h
146
1( )g x
2x
( )f k x
2 2 3x
(1)i j
6
1(4)f
1
2
( 2)k g g
36
( 3)f k
13
1
2i k f
2
1( )h x
3
3
x
( )h k x
23 2x
1( )j x
2 6 9x x
(7)k i
1
( )j f x
2 3 3x
1( 2)j
25
1( )f x
3
2
x
( )i g x
2 4x