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Direct and Inverse Proportions Quiz
Class VIII
Mathematics
Direct and Inverse Proportions
13 questions
MEDIUM
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Preview questions
1. If x is directly proportional to y, which equation represents this relationship?
x = ky · y = kx · xy = k · x + y = k
2. In a direct proportion, if y = 20 when x = 4, what is the value of y when x = 10?
50 · 40 · 30 · 60
3. Which of the following represents an inverse proportion?
y = k/x · y = kx · y = x + k · y = k - x
4. If a and b are inversely proportional, what happens to a when b is doubled?
a doubles · a halves · a remains the same · a quadruples
5. If the cost of 5 kg of rice is ₹200, what is the cost of 8 kg of rice, assuming direct proportion?
₹320 · ₹400 · ₹280 · ₹360
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