determined from the values of X and y given below whether they vary directly inversely or in either of these ways
Answers
Given : Tables of Values of X & Y
To find : Relation between X & Y Directly proportional , inversely proportional or nothing
Step-by-step explanation:
if directly proportional
=> x ∝ y
=> x/y = k ( constant)
if inversely proportional
=> x ∝ 1/y
=> xy = k ( constant)
Lets check these two results for
x 12 3 27 6 2
y 9 36 4 18 54
x/y 4/3 1/12 27/4 1/3 1/27 - not Constant
xy 108 108 108 108 108 - Constant
xy = Constant
Hence inversely proportional
x 4 20 30 40 60 80
y 2 8 10 15 20 25
x/y 2 5/2 3 8/3 3 16/5 - not Constant
xy 8 160 300 600 1200 2000 - not Constant
Neither Directly proportional nor inversely proportional
x 2 9 7 4 3
y 10 45 35 20 15
x/y 1/5 1/5 1/5 1/5 1/5 Constant
x/y is constant
Hence Directly proportional
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Answer:
short answer Chahiye plz