Two lines intersect to form the angles shown. which statements are true? choose more than one.
m∠3=m∠1
m∠1=100°
m∠3=80°
m∠2=80°

Well measure 3 does equal measure 1. (I'm pretty sure?)
From what I can remember, I think the 100 degrees should equal measure 2, and measure 3 should equal measure 1?

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2