Ireally need number 11 , the answers and steps . if anyone wants to me with number 12 go ahead tho

Basically, the distance of roots to the axis of symmetry are the same to each other. Other root is -5.6. Hope this help.

Graphing it out by literally finding random x values and plugging it into the equations (e.g. for x=1 and y=2x-1, 2*1-1=1, so we have (1,1)) then connecting the dots (make sure you're only connecting dots from the same equation!), we connect them and you can easily find the answer from there!