Name another point on the same vertical lines as the point (-1,4)

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

What is an alternate exterior angle

Can someone me do math because i am having a breakdown rn because i don’t get it