What is the equation of the line –3x–2y=30 in slope-intercept form?

Which statements about these triangles is true

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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.