Question 462079

the equation in standard form: {{{ax+by=c}}}

The slope of a line can be positive, negative, zero or undefined. When the line is exactly vertical, it {{{does}}}{{{ not}}} have a defined slope. 

Since your the line has undefined slope, its equation can be written only as
{{{x= something}}}, and since it passes through the point (-11, 7) the
equation is clearly {{{x=-11}}} ....vertical line