Question

Find the value of k when
k when x = 1, y =3
a solution of the equation kx + 3y=10​

Answer 1

Answer:

k=1

EXPLANATION:

x=1

y=3

by substituting the values in the equation we get:

k(1)+3(3)=10

k+9=10

k=10-9

k=1

Answer 2

Given Equation

• kx + 3y = 10

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Given Values

• x = 1
• y = 3

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To find

• Value of k.

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Solution

• By putting the given values in the given equation, we will find the value of k.

⠀

→ k(1) + 3(3) = 10

→ k + 9 = 10

→ k = 10 - 9

→ k = 1

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• Value of k is 1.

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Verification

• Put

$\: \: \: \: \: \: \: \: \bullet\bf\: \: \: {x = 1}$

$\: \: \: \: \: \: \: \: \bullet\bf\: \: \: {y = 3}$

$\: \: \: \: \: \: \: \: \bullet\bf\: \: \: {k = 1}$

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→ (1 × 1) + (3 × 3) = 10

→ 1 + 9 = 10

→ 10 = 10

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★ LHS = RHS

Verified

⠀

Hence,

• Value of k is 1.

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