Answer:
p = - 4
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to - 4
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 3, p ) and (x₂, y₂ ) = (- 4, 0 )
m = [tex]\frac{0-p}{-4-(-3)}[/tex] = [tex]\frac{-p}{-4+3}[/tex] = [tex]\frac{-p}{-1}[/tex] = p = - 4
