Respuesta :

LunarSoldier

Answer:

x = 9

Step-by-step explanation:

Answer:

[tex]slope \: = \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} } [/tex]

[tex] = \frac{ - 5 - 4}{9 - 9} [/tex]

[tex] = \infty [/tex]