Answer
Please see the graph.
Work Step by Step
Two points on the line:
$x=1$
$y=2\sqrt x$
$y=2\sqrt 1$
$y=2*1 =2$
$(1,2)$
$x=4$
$y=2\sqrt x$
$y=2\sqrt 4$
$y=2*2 =4$
$(4,4)$
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