Answer:
Step-by-step explanation:
[tex]\bold{slope\, (m)=\dfrac{change\ in\ Y}{change\ in\ X}=\dfrac{y_2-y_1}{x_2-x_1}}[/tex]
(-6, 7) ⇒ x₁ = -6, y₁ = 7
(-6, -3) ⇒ x₂ = -6, y₂ = -3
x₁ = x₂ = -6 means there in no slope;
the line is parralel to Y-axis, and its equation is x = -6