Which of the following is a characteristic of all parallelograms

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2