Respuesta :

Answer:

8/5

Step-by-step explanation:

use the formula (y2-y1)/(x2-x1)

(1+7)/(9-4)

8/5

Answer:

-1 .6

Step-by-step explanation:

-7 minus 1 equals -8 and 9 minus 4 equals 5 so -8 divided by 5 equals -1.6 and that is your answer