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Formula
Solve the equation
Graph
$y = 4 - 2 x$
$y = 4$
$x$Intercept
$\left ( 2 , 0 \right )$
$y$Intercept
$\left ( 0 , 4 \right )$
$4-2x = 4$
$x = 0$
 Solve a solution to $x$
$\color{#FF6800}{ 4 } \color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ x } = 4$
 Organize the expression 
$\color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ x } \color{#FF6800}{ + } \color{#FF6800}{ 4 } = 4$
$- 2 x \color{#FF6800}{ + } \color{#FF6800}{ 4 } = 4$
 Move the constant to the right side and change the sign 
$- 2 x = \color{#FF6800}{ 0 }$
$\color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ x } = \color{#FF6800}{ 0 }$
 Change the sign of both sides of the equation 
$2 x = 0$
$\color{#FF6800}{ 2 } \color{#FF6800}{ x } = \color{#FF6800}{ 0 }$
 Divide both sides by the same number 
$\color{#FF6800}{ x } = \color{#FF6800}{ 0 }$
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