Question

Match the entries of column-I with identical magnitudes in column-II :
Column-I
(A) 5 cm test tube
(B) 500 m distance
(C)5 m ribbon
(1) A-I, B-9, C-P
Column-II
(p) 500 cm rope
(9) 0.5 km long bridge
(r) 50 mm pin
(2) A-r, B-p, C-9
(3) A-p, B-r, C-q
(4) A-q, B-p, C-T​

Answer 1

(a) – (s), (b) – (r), (c) – (q), (d) – (p)

A. We know that the equation of x-axis is y = 0 and the equation of any line parallel to x axis is y = k, where k is any constant.

B. We know that the equation of y-axis is x = 0 and the equation of any line parallel to y axis is x = k, where k is any constant.

C. For, y = mx

If we put x = 0 then, y = m×0 = 0 therefore, we get (0, 0) which is origin. So, y = mx represents a line passing through the origin.

The blue line is the graph of y = mx which clearly, passes through origin.

D. Given equation, ax + 4y = 2

⇒ ax = 2 – 4y

Point ( – 2,2) i.e, x = – 2 and y = 2

⇒ a = 3