Question 317598
Look for when the argument equals zero.
{{{y=2*sqrt(x)+3}}}
{{{x=0}}}
Then 
{{{y=2*0+3=3}}}
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(0,3)
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{{{drawing(300,300,-5,5,-5,5,circle(0,3,.2),graph(300,300,-5,5,-5,5, 2*sqrt(x)+3))}}}
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{{{y=sqrt(3x+4)=0}}}
{{{3x+4=0}}}
{{{3x=-4}}}
{{{x=-4/3}}}
Then 
{{{y=0}}}
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(-4/3,0)
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{{{drawing(300,300,-5,5,-5,5,circle(-4/3,0,.2),graph(300,300,-5,5,-5,5, sqrt(3x+4)))}}}