SPM 2019 Add Maths Paper 1, Question 1Functions

Solved on video in English and Bahasa Melayu · 2 marks · Form 4, Functions · 3:59 video

The question

Three dice of different colours are thrown. The numbers obtained by the red, yellow and green dice are '6', '6' and '3' respectively. (a) Draw an arrow diagram to represent the relation 'the coloured dice thrown to the numbers obtained'. (b) Hence, state the type of the relation. Is the relation a function?

[2 marks]

SPM 2019 Add Maths Paper 1, Question 1: the question as drawn in Eduly's video3:59

Step 1

The relation must map each coloured die (the object) to the number it obtained (the image): Red -> 6, Yellow -> 6, Green -> 3.

3 more steps, each with the reason for it, in the full solution

Final answer

(a) Red -> 6, Yellow -> 6, Green -> 3 (arrow diagram). (b) Many-to-one; yes, it is a function.

Where students lose marks

Watch out: two dice showing the same number is many-to-one, not one-to-many, and it is still a function.

Watch every step of this question solved on video (3:59), with the reason behind each step and a box that checks your own answer.

Start 7 days freeAlready a member? Watch it now

No card. Every past-year question on video, in English and BM.

All questions in SPM 2019 Paper 1

Functions: lessons and every past-year question

Baca dalam Bahasa Melayu

More Functions questions

Questions are re-typeset by Eduly for study and commentary. Eduly is not affiliated with Lembaga Peperiksaan Malaysia or the Ministry of Education.