O-LevelMathematicsAlgebra and graphs4024/22 · May/June 2025 · Q198 Marks
Complete the table of values for y = x³ - 5x + 4. x | -3 | -2 | -1 | 0 | 1 | 2 | 3 y | ? | 6 | 8 | 4 | 0 | 2 | 16
- (a)Complete the table of values for y = x³ - 5x + 4. x | -3 | -2 | -1 | 0 | 1 | 2 | 3 y | ? | 6 | 8 | 4 | 0 | 2 | 16[1]
- (b)Draw the graph of y = x³ - 5x + 4 for -3 ≤ x ≤ 3. [Figure showing a coordinate grid][4]
- (c)By drawing a suitable straight line on the grid, find the solutions of the equation x³ - 5x - 3 = 0.[3]
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Mark scheme
Marking points from the official mark scheme (May/June 2025). The mark or mark type is shown in brackets.
- [1] 8
- [4] B3FT for 6 points correctly plotted or B2FT for 4 points correctly plotted or B1FT for 2 points correctly plotted
- [3] M1 Ruled line y = 7 A2 A1 for two correct If M0 scored, SC1 for three correct solutions or x³-5x+4=7 soi
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