Yuki says that if all lines are congruent, then all line segments must be congruent. Is Yuki correct? Explain.

Tickets to an orchestra concert cost $25.50 apiece plus a & 2.50 handling fee for each order. if jamal spent $79 how many ticket did he purchase

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?