Direct Proportion
Authored by R Llewellyn Ball
Mathematics
9th - 11th Grade
Used 14+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A is directly proportional to B.
When A = 12, B = 3.
Find a formula for A in terms of B.
B = 4A
A = 4B
Answer explanation
A = k x B
12 = k x 3
K = 12 3 = 4
So, A = 4 x B
A = 4B
2.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
A is directly proportional to B.
When A = 12, B = 3.
Find A when B = 5.
(a)
3.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
A is directly proportional to B.
When A = 12, B = 3.
Find B when A = 36.
(a)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
C is directly proportional to D.
When C = 125, D = 5.
Find a formula for C in terms of D.
C = 25D
D = 25C
Answer explanation
C = k x D
125 = k x 5
K = 125 5 = 25
So, C = 25 x D
C = 25D
5.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
C is directly proportional to D.
When C = 125, D = 5.
Find C when D = 10.
(a)
6.
FILL IN THE BLANKS QUESTION
2 mins • 1 pt
C is directly proportional to D.
When C = 125, D = 5.
Find D when C = 75.
(a)
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
E is directly proportional to F.
When E = 2, F = 8.
Find a formula for E in terms of F.
E = 4F
E=0.25F
F=4E
F=0.25E
Answer explanation
E = k x F
2 = k x 8
K = 2 8 = 0.25
So, E = 0.25 x F
E = 0.25F
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