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- 1. Multiple ChoiceWhich of the following represents direct variation?y = kxy = k/xy = x/ky = mx + b
- 2. Multiple ChoiceWhich of the following represents indirect variation?y = kxy = k/xy = x/ky = mx + b
- 3. Multiple ChoiceY varies directly with x, and y is 84 when x is 16. Which equation represents this situation?y=1344xy=100xy=5.25xy=4/21x
- 4. Multiple ChoiceIf y = 15 when x = 12 find y when x = 32.40-405-5
- 5. Multiple ChoiceThe width of a rectangle varies inversely with its length. If the width is 6 when the length is 24, give an equation that shows the relationship.y = 4xy = 144xy = 4/xy = 144/x
- 6. Multiple ChoiceThe Height of a wave in California varies directly with the seconds that pass by. At 4 seconds, the wave is 6 feet high. How many seconds will give you a wave that is 10 feet high?y = 2/3x66.67
- 7. Multiple ChoiceY is directly proportional to the square of z and inversely proportional to w.y=kz2/wy=kz/wy=w/kz2y=w/kz
- 8. Multiple ChoiceThe number of kilograms of water in a person’s body varies directly as the person’s mass. A person with a mass of 90 kg contains 60 kg of water. How many kilograms of water are in a person whose mass is 75 kg?50 kg water72 kg water94 kg water150 kg water
- 9. Multiple ChoiceThe interest received on a savings account varies directly with the amount deposited. Daniel received $55.35 in interest on $1230 he deposited. How much interest would Daniel have received if he had deposited $2000 into his account?34.0490.001,285.3544,444.44
- 10. Multiple ChoiceY varies inversely with x, and y is 0.5 when x is 4. Which equation represents this situation?y=2xy=2/xy=4xy=x/2
- 11. Multiple Choicey varies directly with the square of x. If y=40 when x=4, find y when x = 717.570122.5
- 12. Multiple Choicea varies inversely as the square of b. If a is 1 when b is 3, find a when b is 5.0.3692536
- 13. Multiple Choicey varies directly as the square of x and indirectly with z. If y is 8 when x is 4 and z is 6, find y when x is 8 and z is 4.3124864
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