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JOINT VARIATION

Quiz by Michael BALETA

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Q 1/10
Score 0
Which formula represents joint variation?
29
y = kx-z
y = k/xz
y = kxz
y=kx+z

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10 questions

Show answers

Q1
Which formula represents joint variation?
y = kx-z
y = k/xz
y = kxz
y=kx+z
30s
Q2
If y varies jointly as x and z, and y = 15 when x = 3 and z = 5, what is the constant of proportionality?
3
5
1
15
30s
Q3
If y varies jointly as x and z, and y = 20 when x = 2 and z = 4, what is y when x = 3 and z = 6?
45
30
15
40
30s
Q4
If y varies jointly as x and z, and when y = 24, x = 2, and z = 3, what is y when x = 4 and z = 5?
48
60
36
80
30s
Q5
If y varies jointly as x and z, and k = 10 when y = 20 and x = 2, what is z when y = 50 and x = 5?
2.5
5
2
1
30s
Q6
If y varies jointly as x and z, and y = 12 when x = 3 and z = 4, what is y when x = 9 and z = 8?
24
72
36
48
30s
Q7
If y varies jointly as x and z, and y = 25 when x = 5 and z = 1, what is y when x = 10 and z = 2?
75
50
125
100
30s
Q8
If y varies jointly as x and z, and y = 16 when x = 4 and z = 2, what is y when x = 6 and z = 3?
36
12
24
48
30s
Q9
If y varies jointly as x and z, and y = 24 when x = 6 and z = 2, what is y when x = 9 and z = 5?
60
90
36
48
30s
Q10
If y varies jointly as x and z, and y = 30 when x = 2 and z = 5, what is y when x = 4 and z = 10?
15
240
60
120
30s

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