O-LevelMathematicsAlgebra and graphs4024/11 · May/June 2021 · Q204 Marks
The line 2y = x is drawn on the grid. [Figure 20]
- (a)(i)On the grid, draw the graph of y = 2,[1]
- (a)(ii)y+x = 4.[1]
- (b)On the grid, shade and label the region R, defined by the following inequalities. x+y≤4 2y ≥ x y≤2 x ≥ 0[2]
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Mark scheme
Marking points from the official mark scheme (May/June 2021). The mark or mark type is shown in brackets.
- [1] (a)(i) y = 2 ruled correctly
- [1] (a)(ii) y + x = 4 ruled correctly
- [2] (b) Correct region shaded
- B1 for region satisfying 3 of the inequalities
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