O-LevelMathematicsAlgebra and graphs4024/11 · Oct/Nov 2016 · Q184 Marks
Solve the simultaneous equations. 2x + 5y = 2 3x + 4y = -4
- Solve the simultaneous equations. 2x + 5y = 2 3x + 4y = -4[4]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- Correctly equating one pair of coefficients or expressing one variable in terms of the other. M1
- A correct method to eliminate one variable. M1
- Either x = -4 or y = 2 WWW. A1
- Both x = -4 and y = 2 WWW. A1
- If [0] earned, then award C1 for a pair of values that satisfies either equation.
- If only M1 + M1 earned, then award B1 for a correct substitution of their first solution into one, or a correct linear combination of both, of the original equations.
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