Anyone help please!!

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Can any one me with the answers to these questions asap?

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.