Enable text based alternatives for graph display and drawing entry

Try Another Version of This Question

The equation of the hyperbola that has a center at ` (8,1) `, a focus at ` (13 , 1) `, and a vertex at ` (11 , 1 ) `, is
` \frac((x-C)^2)(A^2)-\frac((y-D)^2)(B^2)=1 `
where
` A = `  
` B = `  
` C = `  
` D = `  

Get help: