Simultaneous Equations (Junior Cert Mathematics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are simultaneous equations?
What are simultaneous equations?
Equations sharing the same variables
What is the goal when solving simultaneous equations?
What is the goal when solving simultaneous equations?
Find values making all equations true
What do solutions to simultaneous equations give when working with graphs?
What do solutions to simultaneous equations give when working with graphs?
Coordinates of intersection point
What is the most common method for solving simultaneous equations at Junior Cycle level?
What is the most common method for solving simultaneous equations at Junior Cycle level?
The elimination method
What does the elimination method involve?
What does the elimination method involve?
Adding/subtracting to cancel a variable
Why might you multiply equations before adding them in the elimination method?
Why might you multiply equations before adding them in the elimination method?
To make coefficients suitable to cancel
Why do we label equations as Equation A and Equation B in Step 1?
Why do we label equations as Equation A and Equation B in Step 1?
To keep track of them clearly
What happens when you add two equations with opposite coefficient signs for a variable?
What happens when you add two equations with opposite coefficient signs for a variable?
That variable cancels out
After finding the value of one variable, what should you do next?
After finding the value of one variable, what should you do next?
Substitute back to find other variable
Why is it important to check your solutions in Step 6?
Why is it important to check your solutions in Step 6?
To confirm no errors were made
In the example, after adding and , what equation results?
In the example, after adding and , what equation results?
What is the correct order of main steps in the elimination method?
What is the correct order of main steps in the elimination method?
Label, multiply, add, solve, substitute