Respuesta :

Answer:

a. -4

Step-by-step explanation:

slope formula [tex]m=\frac{y^2-y^1}{x^2-x^1}[/tex]

[tex]\frac{4-(-4)}{4-6} =\frac{4+4}{4-6} =\frac{8}{-2} =-4[/tex]