I apreciate your help thanks.

Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?