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Course Content
Algebra 1
0/14
Algebra 2
0/16
Trigonometry 1
0/18
Coordinate Geometry of the Line
0/14
Probability 1
0/14
Geometry 1
0/6
Differential Calculus
0/10
Trigonometry 2
0/10
Sequences & Series
0/12
Statistics 1
0/9
Coordinate Geometry of the Circle
0/14
Algebra 3
0/16
Complex Numbers
0/12
Geometry 2
0/4
Integration
0/8
Differential Calculus Applications
0/8
Financial Maths
0/8
Length, Area & Volume
0/6
Probability 2
0/9
Functions
0/15
Statistics 2
0/4
Inferential Statistics
0/6
Digital Lessons

Knowledge Check Quiz

#### EXAMS.IE

##### Simultaneous Equations

Hint

If we wish to find $$3$$ variables, we need to solve $$3$$ simultaneous equations.

1 / 5

If we wish to find $$n$$ variables, how many simultaneous equations do we need to solve?

Hint

This is one equation for two unknown variables.

2 / 5

The equation $$x+y=5$$ has an infinite number of solutions.

Hint

This is two equations for two unknown variables.

3 / 5

The equations $$x+y=5$$ and $$x-y=2$$ have a unique solution if solved simultaneously.

Hint

This is two equations for three unknown variables.

4 / 5

The equations $$x+z=5$$ and $$x-y=2$$ have a unique solution if solved simultaneously.

Hint

This is two equations for two unknown variables.

5 / 5

The equations $$x+z=5$$ and $$x-z=2$$ have a unique solution if solved simultaneously.