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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$23$
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$\color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ \times } \left ( \color{#FF6800}{ - } \color{#FF6800}{ 9 } \right ) + 5$
$ $ Multiply $ - 2 $ and $ - 9$
$\color{#FF6800}{ 18 } + 5$
$\color{#FF6800}{ 18 } \color{#FF6800}{ + } \color{#FF6800}{ 5 }$
$ $ Add $ 18 $ and $ 5$
$\color{#FF6800}{ 23 }$
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