If aed and ced are both right triangles, what triangle congruence could be used to prove that the two triangles are congruent
(hint: it is not hypotenuse leg)

The two triangles are congruent by AAS postulate.

Step-by-step explanation:

From the figure,

°

°

So, °

For the given triangles ,

Therefore, the triangles are congruent by AAS postulate as two angles and one corresponding sides are congruent.

range is infinite on both x and y axis positive and negative

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.