10. for real numbers a and b, define the map? trr by t, (x)= ax+b. under composition of mappings, this bec let g-t, :a,be r,a 0 up. which of the following subgr

10. For real numbers a and b, define the map? TRR by T, (x)= ax+b. Under composition of mappings, this bec Let G-T, :a,be R,a 0 up. Which of the following subgro G are normal? H-Tla 0,a e Q,be2)