Everything Maths Grade 10

9.You are given the following diagram:

 3  2  1 1 2

 3

 2

 1

1

2

3

4

5

A(2;2)

B(1;y)

x

y

You are also told that lineABhas a gradient,m, of 2. Calculate the missing co-ordinate of pointB.

10.In the diagram,Ais the point(6; 1)andBis the point(0; 3).

 7  6  5  4  3  2  1

1

2

3

4

B(0; 3)

A(6; 1)

x

y

a)Find the equation of lineAB.

b)Calculate the length ofAB.

11.You are given the following diagram:

 4  3  2  1 1 2 3 4

 4

 3

 2

 1

1

2

A(3;j,8)

B

x

y

You are also told that lineABruns parallel to the following line:y=1,5x4. PointAis at(3;3,5).

Find the equation of the lineAB.

318 8.5. Chapter summary