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#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

### Grade 8 - Mathematics2.11 Direct Proportion - II

 Example: x is directly proportional to y, if x=3 and y=2, find the constant of variation and then find x when y = 6? Solution: x ¥ y Þ x = ky Given that x= 3, y = 2 3 =2k \ k = 3/2 Þ Constant of variation is 3/2 No, find x when y = 6. y = 6 Þ x = (3/2) * 6 x = 3 * 3 x = 9 Directions: Solve the following problems. Also write at least 10 examples of your own.
 Q 1: x is directly proportional to y, if x=5 and y=7, find the constant of variation and then find x when y = 5.25/77/25257 Q 2: x is directly proportional to y, if x= and y=4, find the constant of variation and then find x when y = 8.43/58None of these Q 3: x is directly proportional to y, if x=4 and y=2, find the constant of variation and then find y when x = 6.36129 Q 4: x is directly proportional to y, if x=9 and y=6, find the constant of variation and then find y when x = 3.2526/526 Q 5: x is directly proportional to y, if x=12 and y=13, find the constant of variation and then find x when y = 5.60/1313/601360 Q 6: x is directly proportional to y, if x=3 and y=4, find the constant of variation and then find x when y = 7.21/444/2121 Q 7: x is directly proportional to y, if x=2 and y=3, find the constant of variation and then find x when y = 4.83/88/33 Q 8: x is directly proportional to y, if x=7 and y=5, find the constant of variation and then find y when x = 10.5077/5050/7 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!