Which of the following ordered pairs is a solution of 2x-y=-9? (-4,1)
(-3,-4)
(4, -1)
(3,-4)

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.