O-LevelMathematicsVectors and transformations4024/11 · Oct/Nov 2014 · Q113 Marks
John works in a shop. The matrix below shows the number of hours he worked on Monday to Friday, Saturday, and Sunday during two different weeks. Monday to Friday | Saturday | Sunday --- | --- | --- Week 1 | 30 | 5 | 0 Week 2 | 35 | 6 | 2 The matrix below shows the pay that he received per hour on Monday to Friday, Saturday, and Sunday. $/hr [ 9 ] Monday to Friday [12] Saturday [15] Sunday
- (a)Find P. P = [ 30 5 0 ] [ 9 ] [ 35 6 2 ] [12] [15][2]
- (b)Explain the meaning of the information given by matrix P.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2014). The mark or mark type is shown in brackets.
- [2] (a) (330 / 417)
- B1 for 330 or 417 in a (2 by 1) matrix, or for (330 417).
- [1] (b) P shows the amount earned in Week 1 and Week 2, oe
- Must refer to (i) the amount earned (money, earings, $, etc) and (ii) the two weeks.
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