Question

The equation 2x+5y=7 has a unique solution,if x and y are:
(a)Natural numbers.
(b)Positive real numbers.
(c)Real numbers.
(d)Rational numbers.
​

Answer 1

Natural numbers has a unique solution

Answer 2

$\sf { \underline{SOLUTION}}$

TO CHOOSE THE CORRECT OPTION

The equation 2x+5y=7 has a unique solution,if x and y are :

(a) Natural numbers

(b) Positive real numbers

(c) Real numbers

(d) Rational numbers

EVALUATION

Here the given equation is

2x + 5y = 7

The equation represents a line

Any point on the line is a solution of the equation in the set of Real numbers

But in Natural number set there is only one solution x = 1 , y = 1

Graph : On the graph in the attachment the point A (1,1) is Solution in Natural number set

FINAL ANSWER

The equation 2x+5y=7 has a unique solution,if x and y are :

(a) Natural numbers

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