help

[wise sand]

For what value of a is the function continuous

[pine vessel]

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[lone hazel]

you can plot a graph to see what it is

\newcommand\myA{1}
\begin{tikzpicture}[declare function={f(\x)=\x+\myA; g(\x)=2-\x;}]
\begin{axis}[axis equal, axis lines=center,grid=both,major grid style={black!50,line width=.5},minor tick num=9,minor grid style={black!40,line width=.2},xlabel={$x$},ylabel={$y$},title={Use \TeX{}it to sketch graph}]
\addplot[yellow,domain=0:1] {f(x)} node[pos=.3, anchor=west]{$y = x+a$ with $a = \myA$};
\addplot[blue!60,domain=1:2] {g(x)} node[pos=.1, anchor=south west]{$y = 2-x$};
\end{axis}
\end{tikzpicture}

[agile trout]

vin100

[wise sand]

Ahh its so simple