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Formula

Solve the equation

Answer

Graph

$x + y = 4$

$x$-intercept

$\left ( 4 , 0 \right )$

$y$-intercept

$\left ( 0 , 4 \right )$

$x+y = 4$

$x = - y + 4$

$ $ Solve a solution to $ x$

$x \color{#FF6800}{ + } \color{#FF6800}{ y } = 4$

$ $ Move the rest of the expression except $ x $ term to the right side and replace the sign $ $

$x = 4 \color{#FF6800}{ - } \color{#FF6800}{ y }$

$x = \color{#FF6800}{ 4 } \color{#FF6800}{ - } \color{#FF6800}{ y }$

$ $ Organize the expression $ $

$x = \color{#FF6800}{ - } \color{#FF6800}{ y } \color{#FF6800}{ + } \color{#FF6800}{ 4 }$

$y = - x + 4$

$ $ Solve a solution to $ y$

$\color{#FF6800}{ x } + y = 4$

$ $ Move the rest of the expression except $ y $ term to the right side and replace the sign $ $

$y = 4 \color{#FF6800}{ - } \color{#FF6800}{ x }$

$y = \color{#FF6800}{ 4 } \color{#FF6800}{ - } \color{#FF6800}{ x }$

$ $ Organize the expression $ $

$y = \color{#FF6800}{ - } \color{#FF6800}{ x } \color{#FF6800}{ + } \color{#FF6800}{ 4 }$

$ $ 그래프 보기 $ $

Linear function

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