Simultaneous Equations with Three Unknowns (Leaving Cert Mathematics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How many variables are in a system of three linear equations?
How many variables are in a system of three linear equations?
Three
What do equations of three variables represent geometrically?
What do equations of three variables represent geometrically?
A plane
What does solving three equations in three unknowns mean?
What does solving three equations in three unknowns mean?
Finding the point of intersection
What is the most common method to solve three equations in three unknowns?
What is the most common method to solve three equations in three unknowns?
Elimination method
What is the first step in the elimination method?
What is the first step in the elimination method?
Pick two equations, eliminate a variable
In step 2 of elimination, which variable should you eliminate?
In step 2 of elimination, which variable should you eliminate?
The same variable
What are you left with after step 2 of the elimination method?
What are you left with after step 2 of the elimination method?
Two equations, two unknowns
After solving for two variables, what should you do?
After solving for two variables, what should you do?
Substitute into an original equation
In the worked example, what is the value of ?
In the worked example, what is the value of ?
6
In the worked example, what is the value of ?
In the worked example, what is the value of ?
0