Two parallel lines are crossed by a tranversal. What is the value of y? y=40, y=80, y=100, y=120

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?

In an isosceles triangle, the vertex angle is 112 degrees. what is the measure of each base. a.34 b.24 c.44 d.54