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WorksheetsDirect Proportion
Total questions: 15
Worksheet time: 30mins
A is directly proportional to B.
When A = 12, B = 3.
Find a formula for A in terms of B.
B = 4A
A = 4B
A = 4B
A is directly proportional to B.
When A = 12, B = 3.
Find A when B = 5.
(a)
A is directly proportional to B.
When A = 12, B = 3.
Find B when A = 36.
(a)
C is directly proportional to D.
When C = 125, D = 5.
Find a formula for C in terms of D.
C = 25D
D = 25C
D = 25C
C is directly proportional to D.
When C = 125, D = 5.
Find C when D = 10.
(a)
C is directly proportional to D.
When C = 125, D = 5.
Find D when C = 75.
(a)
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
E is directly proportional to F.
When E = 2, F = 8.
Find E when F = 30.
(a)
E is directly proportional to F.
When E = 2, F = 8.
Find F when E = 100.
(a)
Y is directly proportional to X.
When X = 400, Y = 10.
Find a formula for Y in terms of X.
Y = 40X
Y=0.025X
X=40Y
X=0.025Y
Y is directly proportional to X.
When X = 400, Y = 10.
Find Y when X = 450.
(a)
Y is directly proportional to X.
When X = 400, Y = 10.
Find X when Y = 200.
(a)
In a spring the tension (T newtons) is directly proportional to the extension of the spring (y cm)
When the tension is 180 newtons, the extension is 4 cm.
Find a formula for T in terms of y.
y = 45T
y=0.02T
T=0.02y
T = 45y
In a spring the tension (T newtons) is directly proportional to the extension of the spring (y cm)
When the tension is 180 newtons, the extension is 4 cm.
Find the tension of the spring when it is extended to 3 cm.
(a)
In a spring the tension (T newtons) is directly proportional to the extension of the spring (y cm)
When the tension is 180 newtons, the extension is 4 cm.
Find by how much the spring is extended if the tension is 585 N.
(a)
