Respuesta :

masoomazaidiawesome

Answer:

-1

Step-by-step explanation:

Slope formula:

[tex]\frac{y2-y1}{x2-x1}[/tex]

x1 = 1

y1 = 8

x2 = -3

y2 = 12

[tex]\frac{12-8}{-3-1}[/tex]

[tex]\frac{4}{-4}[/tex] = -1