Verify if 3-1 is a solution of 4 x-5 y-7A- TrueB- False

The correct option is A True Given, 4x + 5y = 7 Substitute x = 3, y = 1 LHS = 4(3) + 5( 1) LHS = 12 5 = 7 ⇒ LHS = RHS ∴ (3, 1) is the solution of t ...

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Standard X

Mathematics

Solution of a LE in 2 variables

Verify if 3,-...

Question

Verify if (3,-1) is a solution of $4 x + 5 y = 7$

True

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False

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Solution

The correct option is A
True

Given,

$4 x + 5 y = 7$

Substitute $x = 3, y = - 1$

$L H S = 4 (3) + 5 (- 1)$

$L H S = 12 - 5 = 7$

$\Rightarrow L H S = R H S$

$∴$ (3, -1) is the solution of the equation.

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Verify if (3,-1) is a solution of 4x+5y=7

The correct option is A True Given, 4x+5y=7 Substitute x=3, y=−1 LHS=4(3)+5(−1) LHS=12−5=7 ⇒LHS=RHS ∴ (3, -1) is the solution of the equation.

Verify if (3,-1) is a solution of $4 x + 5 y = 7$

The correct option is A
True

Given,

$4 x + 5 y = 7$

Substitute $x = 3, y = - 1$

$L H S = 4 (3) + 5 (- 1)$

$L H S = 12 - 5 = 7$

$\Rightarrow L H S = R H S$

$∴$ (3, -1) is the solution of the equation.