a group of 50 people were asked their gender and if they liked cats. the data from the survey are shown in the ben diagram. dete
rmine the value in the two-way table. a=? b=?
1 answer:
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y = - 3
Since y varies directly as x then
y = kx ← ( k is the constant of variation )
to find k use y = - 1 when x = 3
k = =
= -
hence y = - x
when x = 9, then
y = - × 9 = - 3