Everything Maths Grade 10

18.The following graph shows a hyperbolic equation of the formy=

a

x

+q.Point Ais shown at(1;5).

Calculate the values ofaandq.

 8  7  6  5  4  3  2  1 1 2 3 4 5 6 7 8

 8

 7

 6

 5

 4

 3

 2

 1

1

2

3

4

A

x

y

19.Given the following equation:y=

3

x

+ 4

a)Determine the location of they-intercept.

b)Determine the location of thex-intercept.

20.Given the following graph, identify a function that matches each of the given equations:

 4  3  2  1 1 2 3 4

 4

 3

 2

 1

1

2

3

4

h(x)

g(x)

k(x)

f(x)

x

y

a) y=

1

2 x

b) y=

7

x

c) y=

3

x

d)y=

1

x

Chapter 6. Functions 219