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₵ 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 2 of 10

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

Question 3 of 10

If y = kx and y = 64 when x = 8, the constant k = ___.

Question 4 of 10

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

Question 5 of 10

If y varies directly as x, then

Question 6 of 10

y varies directly as x. When x = 5, y = 30. Find y when x = 12.

Question 7 of 10

If y = kx and y = 35 when x = 5, the constant k = ___.

Question 8 of 10

y varies as the square of x. When x = 6, y = 324. Find y when x = 2.

Question 9 of 10

y varies directly as x. When x = 2, y = 6. Find y when x = 9.

Question 10 of 10

If y varies jointly as x and z, then