Answer:
slope is undefined
Step-by-step explanation:
Calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (10, - 12) and (x₂, y₂ ) = (10, 7)
m = [tex]\frac{7+12}{10-10}[/tex] = [tex]\frac{19}{0}[/tex]
Since division by zero is undefined then the slope of the line is undefined
