For the question, let x and y be rational numbers not equal to zero. Determine whether the operation results in a value that is always rational, never rational, or sometimes rational.
Y-X
always rational
O never rational
O sometimes rational

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.