Respuesta :

To find the slope ...
1) (5,-1)and(2,4)

4+1 / 2-5 

5/-3

So slope for #1 would be -3/5
Slope is y1-y2/X1-x2 therefore 1 is 4+1/2-5, -5/3 2 is -9/2 3 is -12-6/-23-(-15)... -18/-23+15 therefore 3 is 18/8 or 9/4 reduced.