Everything Maths Grade 10

Exercise 4 – 3:

1.Look at the graph below:

 3  2  1 1 2 3

 5

 4

 3

 2

 1

1

2

y=x 5

y= 2x+ 1

x

y

Solve the equationsy= 2x+ 1andy=x 5 simultaneously.

2.Look at the graph below:

 3  2  1 1 2 3

 5

 4

 3

 2

 1

1

2

y= 2x 1

y= 2x+ 1

x

y

Solve the equationsy= 2x 1 andy= 2x+ 1simultaneously.

3.Look at the graph below:

 3  2  1 1 2 3

 5

 4

 3

 2

 1

1

2

y=x 1

y= 2 x+ 1

x

y

Solve the equationsy= 2 x+ 1andy=x 1 simultaneously.

88 4.4. Solving simultaneous equations