Q53 of 59 Page 178

State whether the statements are true or false.

The equation of the line joining the point (3, 5) to the point of intersection of the lines 4x + y – 1 = 0 and 7x – 3y – 35 = 0 is equidistant from the points (0, 0) and (8, 34).

Given two lines are:


4x + y - 1 = 0 …(i)


and 7x - 3y -35 = 0 …(ii)


Now, point of intersection of these lines can be find out as:


Multiplying eq. (i) by 3, we get


12x + 3y – 3 = 0 …(iii)


On adding eq. (ii) and (iii), we get


7x – 3y – 35 + 12x + 3y – 3 = 0


19x – 38 = 0


19x = 38


x = 2


On putting value of x in (i), we get


4(2) + y – 1 = 0


8 + y – 1 = 0


y = -7


So, the point of intersection of given two lines is:


(x, y) = (2, -7)


Now, we have to find the equation of the line joining the point (3, 5) and (2, -7).


Again, equation of line is given by:





y – 5 = 12(x – 3)


y – 5 = 12x – 36


12x – y – 36 + 5 = 0


12x – y – 31 = 0 …(iv)


Now, the distance of eq. (iv) from the point (0, 0) is





Now, the distance of eq. (iv) from the point (8, 34) is





Hence, the equation of line 12x – y – 31 = 0 is equidistant from (0, 0) and (8, 34)


Hence, the given statement is TRUE


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