Variation

Question 1 of 10

The cost C cedis of hiring a canopy is partly constant and partly varies as the number of hours h. It costs GH₵ 58 for 4 hours and GH₵ 66 for 8 hours. (a) Find the relationship between C and h. (b) Find the cost for 19 hours.

Question 2 of 10

If y varies inversely as x, then

Question 3 of 10

The cost C cedis of hiring a canopy is partly constant and partly varies as the number of hours h. It costs GH₵ 45 for 5 hours and GH₵ 54 for 8 hours. (a) Find the relationship between C and h. (b) Find the cost for 14 hours.

Question 4 of 10

The cost C cedis of hiring a canopy is partly constant and partly varies as the number of hours h. It costs GH₵ 45 for 3 hours and GH₵ 80 for 10 hours. (a) Find the relationship between C and h. (b) Find the cost for 19 hours.

Question 5 of 10

The cost of a taxi ride (fixed charge + rate per km) is an example of partial variation.

Question 6 of 10

y varies jointly as x and z. When x = 5 and z = 5, y = 200. Find y when x = 4 and z = 5.

Question 7 of 10

If y = kx and y = 48 when x = 6, the constant k = ___.

Question 8 of 10

The time taken for a journey varies inversely as the speed.

Question 9 of 10

y varies inversely as x. When x = 6, y = 4. Find y when x = 2.

Question 10 of 10

If y = kx and y = 48 when x = 8, the constant k = ___.