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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.

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