Quiz Form 5 - Ubahan / Variasi

Jumlah gaji pekerja sambilan sebagai promoter berbeza secara langsung mengikut bilangan jam dia

berfungsi. Nyatakan perubahan pada;

The total wage of a part time worker as a promoter varies directly as the number of hours he works.

State the change on;

i) Jumlah gaji jika bilangan waktu bekerja berkurangan sebanyak 40%

The total wage if the number of working hours decreases by 40%

• 
  Jumlah gaji berkurangan sebanyak 40%.

  The total wage decreases by 40%.

• Jumlah gaji menaik sebanyak 40%.

  The total wage increases by 40%.

ii) Bilangan jam bekerja jika jumlah gaji dikurangkan separuh.

The number of working hours if the total wage is halved.

• Bilangan waktu bekerja dinaikkan separuh.

  The number of working hours is halved.

• Bilangan waktu bekerja dikurangkan separuh.

  The number of working hours is halved

Sambungan spring, x cm, berubah secara langsung sebagai jisim beban, w g, tergantung pada tali. Ia diberi sambungan spring ialah 3 cm apabila beban 200 g digantung pada tali. Ungkapkan x dalam sebutan w.

The extension of a spring, x cm, varies directly as the mass of the load, w g, hanging on the string. It is given the extension of a spring is 3 cm when a load of 200 g is hung on the string. Express x in terms of w.

• x = 0.15w

• x = 0.015w

• x = 0.150w

Ia diberi y berubah secara langsung sebagai x. Jika y = 0.14 apabila x = 0.2, hitung nilai x apabila y = 0.875.

It is given y varies directly as x. If y = 0.14 when x = 0.2, calculate the value of

x when y = 0.875 .

• x = 3.5

• x = 1.25

• x = 1.20

• x = 1.55

Cikgu Farid mempunyai sejumlah wang untuk membeli hadiah bagi pemenang kuiz Matematik. Jika

harga hadiah RM10, lepas tu Cikgu Farid boleh beli 10 hadiah. Nyatakan bilangan hadiah

yang boleh dibeli jika harga hadiah menaik dua kali ganda.

Cikgu Farid has a sum of money to buy gifts for the winners of a Mathematics quiz. If the price of a gift is RM10, then Cikgu Farid can buy 10 gifts. State the number of gifts that can be bought if the price of a gift increases by two times,

• The number of gifts decreases by two times.

• The number of gifts decreases halved.

• The number of gifts increases by two times,

Dengan mengira nilai x²t, tentukan sama ada t berubah secara songsang sebagai x.

By calculating the values of x²t, determine whether t varies inversely as x.

• The value of x²t is not a constant. So, t not varies inversely as x.

• The value of x²t is a constant. So, t varies inversely as x.

Diberi bahawa x = 0.25 apabila y = 3. Ungkapkan y dalam sebutan x jika y berubah secara songsang sebagai punca kuasa dua x.

It is given that x = 0.25 when y = 3. Express y in terms of x if y varies inversely as the square root of x.

• x = 4

• x = 0.04

• x = 3.2

Tempoh ayunan, T, bandul ringkas berbeza secara songsang sebagai punca kuasa dua

pecutan graviti, g. Dalam eksperimen, tempoh ayunan ialah 1.01 saat

apabila pecutan graviti ialah 9.85 ms. Ungkapkan T dalam sebutan g.

The period of oscillation, T, of a simple pendulum varies inversely as the square root of gravitational acceleration, g. In an experiment, the period of oscillation is 1.01 seconds when the gravitational acceleration is 9.85 ms. Express T in terms of g.