Question 106052
We need to find equation of form {{{y=ax+b}}}, where {{{a}}} is {{{slope}}}, and {{{b}}} is {{{intercept}}}, which passes through points ({{{x1}}}, {{{y1}}}) = ({{{2}}}, {{{-3}}}) and ({{{x2}}}, {{{y2}}}) = ({{{2}}}, {{{4}}}).

Slope {{{a }}}is 

{{{a = (y[2] - y[1])/(x[2] - x[1])}}}

intercept {{{b}}} is

{{{b = y[1] - a*x[1]}}}

so, we will have:

{{{a = (y[2] - y[1])/(x[2] - x[1])}}}

{{{a = (4 - (-3))/(2 - 2)}}}

 since the {{{x}}} coordinates of both points are the same, we cannot describe the line that passes through these two points as a non-vertical line. This line is a vertical line, paralel to {{{y}}} axis and goes throug {{{x=2}}}