Write the equation for the graph below in point-slope form. Help me

Find the difference (8ab+a+2) - (3ab+6)

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

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.