Everything Maths Grade 10

 2  1 1 2 3

 4

 3

 2

 1

1

2

3

A( 1 ;j,8)

B

x

y

The equation of the blue dashed line isy=0,5x0,5. PointAis at( 1 ;3,5).

Determine the equation of lineAB.

13.Given lineABwhich runs perpendicular to lineCDwith equationy= 2 x+ 1. PointsA(5;1)and
B(3;a)are also given. Calculate the missing co-ordinate of pointB.

14.Given lineABwhich runs perpendicular to lineCDwith equationy= 2x0,75. PointsA(5; 1)and
B(a;2,5)are also given. Calculate the missing co-ordinate of pointB.

15.You are given the following diagram:

 4  3  2  1 1 2 3

1

2

3

4

A( 3 ;3)

B(2;a)

x

y

You are also told that lineABhas the following equation:y=0,5x+1,5.

Calculate the missing co-ordinate of pointB.

16.You are given the following diagram:

 5  4  3  2  1 1 2

 4

 3

 2

 1

A( 4 ;3)

B(1;a)

x

y

Chapter 8. Analytical geometry 307