Question 174912
{{{y^2=x+4}}}. 

(h,1)------------>this is in point form (x,y)


plug h in for x and 1 in for y:


{{{1^2=h+4}}}


Now simplify {{{1^2}}}


{{{1=h+4}}}


Now subtract 4 from each side


{{{-3=h}}}