Problem
What is the slope of XZ?

Answer:
slope = - [tex]\frac{1}{3}[/tex]
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 = X (1, 5 ) and (x₂, y₂ ) = Z (7, 3 )
[tex]m_{XZ}[/tex] =[tex]\frac{3-5}{7-1}[/tex] = [tex]\frac{-2}{6}[/tex] = - [tex]\frac{1}{3}[/tex]