What is the slope of líne?

Help please is for now

Solve for x. −3/4(x+2)=6 enter your answer in the box

Me get the answer and explain to me the steps to solve it would be greatly appreciated : )

Mr. lash has 42 pounds of dog food to divide among his dogs. if each dog receives 7/8 pounds of food for each feeding, how many times can mr. lash feed his animals?