Respuesta :

Answer: undefined.

Step-by-step explanation:

Slope of a line having points (a,b) and (c,d) :

[tex]slope =\dfrac{d-b}{c-a}[/tex]

Given : Point of line z =  (2,2) and (2,7)

Slope of line z : [tex]\dfrac{7-2}{2-2}=\dfrac{5}{0}=\infty[/tex]

Hence, the slope of line z is undefined.

Since , the slope of two parallel lines are same.

Therefore ,the slope of the line parallel  to line z is undefined.