27)
\Find the ellipse equation.
\Draw and observe the graph,
\The point on ellipse 
The standard form of Horizontal ellipse equation is
\
Find the center.
\
Center is 

The horizontal ellipse equation is
\
26)
\Find the ellipse equation.
\Draw and observe the graph,
\The point on ellipse 
The standard form of Horizontal ellipse equation is
\
Find the center.
\
Center is 

The horizontal ellipse equation is
\
27)
\Find the ellipse equation.
\Draw and observe the graph,
\The point on ellipse 
The standard form of Horizontal ellipse equation is
\
Find the center.
\
Center is 

The horizontal ellipse equation is
\