Which of these random samples represents a representative sample of the number of students in a middle school who walk to school
1 answer:
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Answer:
y = 7.5
Step-by-step explanation:
given y is directly proportional to then the equation relating them is
y = k ← k is the constant of proportion
to find k use the condition y = 75 , x = 100 , then
75 = k = 10k ( divide both sides by 10 )
7.5 = k
y = 7.5 ← equation of proportion