Solve the system of equations 2x-y=1; x+2y=8 graphically and find the coordinates of the points where corresponding lines intersect y-axis.
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$y = 4 + x$
$y = 5$
$x$Intercept
$\left ( - 4 , 0 \right )$
$y$Intercept
$\left ( 0 , 4 \right )$
$x = 1$
$ $ Solve a solution to $ x$
$\color{#FF6800}{ 4 } \color{#FF6800}{ + } \color{#FF6800}{ x } = 5$
$ $ Organize the expression $ $
$\color{#FF6800}{ x } \color{#FF6800}{ + } \color{#FF6800}{ 4 } = 5$
$x \color{#FF6800}{ + } \color{#FF6800}{ 4 } = 5$
$ $ Move the constant to the right side and change the sign $ $
$x = 5 \color{#FF6800}{ - } \color{#FF6800}{ 4 }$
$x = \color{#FF6800}{ 5 } \color{#FF6800}{ - } \color{#FF6800}{ 4 }$
$ $ Subtract $ 4 $ from $ 5$
$x = \color{#FF6800}{ 1 }$
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