Can someone help me work this problem out?

Yes

Step-by-step explanation:

According to the Triangle Inequality Theorem, if every combination of 2 sides is equal to the third remaining side, then it is a triangle.

3 + 7 > 8

8 + 3 > 7

8 + 7 > 3

Since all of these are true, that means overall, these 3 sides make a triangle.

Hope this helps!

i believe that the answer is

b. y-1=-2(x-4)

hope this !