How can I tell whether a horizontal parabola opens to the left or the right?
1 Answer
The same way you tell if a parabola opens up or down, by the leading coefficient of the variable.
Since the
#y=+-sqrt(3x-4)+3#
And a negative leading coefficient (-2) means it opens to the left.
#y=+-sqrt(4-2x)+2#
Note that only the top halves of the parabolas are drawn.