Linear Simultaneous Equations - Elimination (Edexcel A-Level Mathematics): Quizzes

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Linear Simultaneous Equations - Elimination
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12 questions from this quiz

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What are simultaneous equations?

A system with fixed solutions or unsolvable

What is the first step in the elimination method?

Make one variable's coefficients equal

In Example 1, what is equation A (2x+3y=102x + 3y = 10) multiplied by?

5

After subtracting the modified equations in Example 1, what is the result?

23y=3623y = 36

What is the value of yy in Example 1?

3623\frac{36}{23}

What is the value of xx in Example 1?

6123\frac{61}{23}

What form must equations be in for calculator method?

ax+by=kax + by = k where coefficients are real

In Example 2, what is the coefficient of yy in equation (1)?

1

In Example 2, are the equations added or subtracted to eliminate yy?

Added

After adding equations in Example 2, what is the result?

7x=187x = 18

What is the value of xx in Example 2?

187\frac{18}{7}

What is the value of yy in Example 2?

137\frac{13}{7}

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