1.y varies inversely as x and y= 20 when x = 10. What is the value of the constant k? *
2. y is inversely proportional to x, and y = 10 when x = 2. What is the value of the constant of variation?
3. y varies inversely as x, and y = 8 when x = 2. What is the value of the y when x is 4
4.y varies directly as x , and y = 20 when x = 4. What is the value of x when y = 100? *
5. If z varies jointly as x and inversely as y and if x=2 when y=5 and z=10, find z when x=6 and y=10. *
2. y is inversely proportional to x, and y = 10 when x = 2. What is the value of the constant of variation?
3. y varies inversely as x, and y = 8 when x = 2. What is the value of the y when x is 4
4.y varies directly as x , and y = 20 when x = 4. What is the value of x when y = 100? *
5. If z varies jointly as x and inversely as y and if x=2 when y=5 and z=10, find z when x=6 and y=10. *
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Answer:
1. k = 200
2. k = 20
3. k = 16
4. y = 20
5. z = 3
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