12. The IGCSE results of the 30 members of a rugby squad were as follows: All 30 players passed at least two subjects, 18
players passed at least three subjects, and 3 players passed four
subjects or more. Calculate:
a) how many passed exactly two subjects, 12
b) what fraction of the squad passed exactly three subjects. Ź

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step-by-step explanation:

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  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.