Q. 303.9( 7 Votes )

Find the value of k, if x = 3, y = 1 is a solution of the equation 2x + 5y = k.

Class 9th RS Aggarwal & V Aggarwal - Mathematics 8. Linear Equations in Two Variables

Answer :

2x + 5y = k

Putting, x = 3 and y = 1 in 2x + 5y = k

⇒ 2×3 + 5×1 = k

⇒ 6 + 5 = k

⇒ 11 = k

Hence, k = 11

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PREVIOUSCheck which of the following are solutions of the equation 2x – 3y = 6.(i) (3, 0) (ii) (0, 2)(iii) (2, 6) (iv) (6, 2)NEXTFind four different solutions of 2x + y = 6.

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