Algebra part A B C and D

Which of the following are accepted without proof in a logical system? check all that apply.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by