F(x)=(2-a)x+3 ,determinati aapartine lui r stiind ca a(1,5) este situat pe graficul functiei ,si punctil b) pentru ''a'' determinat reprezentati grafic functia . va rog sa ma ajutati pl

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.