Simultaneous equations (Edexcel GCSE Maths): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
How many unknown variables do simultaneous equations contain?
How many unknown variables do simultaneous equations contain?
Two
What are you finding when solving simultaneous equations?
What are you finding when solving simultaneous equations?
Values making both equations true
Which technique does the algebraic method use to solve simultaneous equations?
Which technique does the algebraic method use to solve simultaneous equations?
Elimination and substitution
What is Step 1 in the five-step algebraic method?
What is Step 1 in the five-step algebraic method?
Number each equation
Why multiply equations in Step 2?
Why multiply equations in Step 2?
To match coefficients of one unknown
What does Step 3 achieve?
What does Step 3 achieve?
Eliminates one unknown
What happens in Step 4 of the algebraic method?
What happens in Step 4 of the algebraic method?
Substitute to find other unknown
What is the purpose of Step 5?
What is the purpose of Step 5?
Check your answer
If an unknown has different signs in two equations, how can you eliminate it?
If an unknown has different signs in two equations, how can you eliminate it?
By adding the equations together
In the graphical method, what gives the solution to simultaneous equations?
In the graphical method, what gives the solution to simultaneous equations?
The point of intersection
Which method is more accurate for finding exact answers?
Which method is more accurate for finding exact answers?
Algebraic method
What should you look for to reduce arithmetic errors when multiplying?
What should you look for to reduce arithmetic errors when multiplying?
Smallest multipliers