Assertion: parabola's directrix | /r/HasProperty | latex]x=7[/latex
Facets:
Source sentences:
text: ; Focus: [latex]\left(9,-1\right)[/latex]; Directrix: [latex]x=7[/latex]; Endpoints of the latus rectum: [latex]\left(9,-3\right)[/latex] and [latex]\left(9,1\right)[/latex].