No, the sum of the lengths of any two sides of a triangle must be greater than the length of the third side. ( ex; 3,4,8. 3+4=7 ( the two side lengths) and the third side length is 8, which is a bigger number than 7, which means it’s not possible because the third side length is a larger number than the two side lengths. Hope that helped you :)
The slope will be -3/4 To find slope you just place the change in y over the change in x. 2- -1=3 0-4= -4 The slope is -3/4 which is the same as before