Q1 of 32 Page 239

Observe the following tables and find which pair of variables (x and y) are in inverse proportion

x1 = 90, y1 = 10 x1y1 = 900

x2 = 60, y2 = 15 x2y2 = 900


x3 = 45, y3 = 20 x3y3 = 900


x4 = 30, y4 = 25 x4y4 = 750


x5 = 20, y5 = 30 x5y5 = 600


x6 = 5, y6 = 25 x6y6 = 175


x1y1 =x2y2 =x3y3≠x4y4≠x5y5≠x6y6


(x1,y1), (x2,y2), (x3, y3) are in inverse proportions.


More from this chapter

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1

Observe the following tables and find which pair of variables (x and y) are in inverse proportion

 1

Observe the following tables and find which pair of variables (x and y) are in inverse proportion

 2

A school wants to spend Rs 6000 to purchase books. Using this data, fill the following table.

 3

Take a squared paper and arrange 48 squares in different number of rows as shown below:



What do you observe? As R increases, C decreases


(i) Is R1 : R2 = C2 : C1?


(ii) Is R3 : R4 = C4 : C3?


(iii) Is R and C inversely proportional to each other?


(iv) Do this activity with 36 squares.