If f2 x-3 y- 2 x-7 y-20 x- then fx- y equalsA- 7 x-3 yB- 7 x-3 yC- 3 x-7 yD- x-4 y

The correct option is B 7x+3yLet nbsp;2x+3y=m nbsp;and nbsp;2x 7y=n. nbsp;then, nbsp;m n=10y⇒y=m n10Putting nbsp;this nbsp;value nbsp;of nbsp; ...

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Linear functions

If f2 x+3 y, ...

Question

If $f (2 x + 3 y, 2 x - 7 y) = 20 x$ , then $f (x, y)$ equals

7x-3y

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7x+3y

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3x-7y

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x-4y

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Solution

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Similar questions

f (2 x + 3 y, 2 x - 7 y) = 20 x

f (x, y)

f (2 x + 3 y, 2 x - 7 y) = 20 x

f (x, y)

x, y, z \in R

△ = ∣ ∣ ∣ ∣ \begin{matrix} x & x + y & x + y + z 2 x & 5 x + 2 y & 7 x + 5 y + 2 z 3 x & 7 x + 3 y & 9 x + 7 y + 3 z \end{matrix} ∣ ∣ ∣ ∣ = - 16

x

x, y, z \in R

Δ = ∣ ∣ ∣ ∣ \begin{matrix} x & x + y & x + y + z 2 x & 5 x + 2 y & 7 x + 5 y + 2 z 3 x & 7 x + 3 y & 9 x + 7 y + 3 z \end{matrix} ∣ ∣ ∣ ∣ = - 16

x

x, y, z \in R, Δ = ∣ ∣ ∣ ∣ \begin{matrix} x & x + y & x + y + z 2 x & 5 x + 2 y & 7 x + 5 y + 2 z 3 x & 7 x + 3 y & 9 x + 7 y + 3 z \end{matrix} ∣ ∣ ∣ ∣ = - 16

x

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