Choose correct alternative for each of the following questions(1) To d

Choose correct alternative for each of the following questions(1) To draw graph of 4x +5y = 19, Find y when x = 1. A) 4 (B) 3 (C) 2 (D) –3 (2) For simultaneous equations in variables x and y, Dx = 49, Dy = –63, D = 7 then what is x ? A) 7 (B) –7 (C) 17 (D) -17 (3) Find the value of 53-7-4 A) –1 (B) –41 (C) 41 (D) 1 (4) To solve x + y = 3 ; 3x – 2y – 4 = 0 by determinant method find D. A) 5 (B) 1 (C) –5 (D) –1 (5) ax + by = c and mx + ny = d and an ≠ bm then these simultaneous equations have - (A) Only one common solution. (A) No solution. (C) Infinite number of solutions. (D) Only two solution.

Answer»

Choose correct alternative for each of the following questions

(1) To draw graph of 4x +5y = 19, Find y when x = 1.

A) 4

(B) 3

(D) –3

(2) For simultaneous equations in variables x and y, D_x= 49, D_y = –63, D = 7 then what is x ?

A) 7

(B) –7

(C)

\frac{1}{7}

(D)

\frac{- 1}{7}

(3) Find the value of

|\begin{matrix} 5 & 3 \\ - 7 & - 4 \end{matrix}|

A) –1

(B) –41

(D) 1

(4) To solve x + y = 3 ; 3x – 2y – 4 = 0 by determinant method find D.

A) 5

(B) 1

(D) –1

(5) ax + by = c and mx + ny = d and an ≠ bm then these simultaneous equations have -

(A)	Only one common solution.	(A)	No solution.
(C)	Infinite number of solutions.	(D)	Only two solution.