The answer would be where the points meet.
In this case it would be (1,-1)
In geometry, if 2 angles are congruent, then their corresponding sides are also congruent. So you can have 3x-5=2x+9 & solve for x. Then substitute that value into all the other expressions to get the measures of all 3 sides. From there, you can determine the type of triangle
x -3y = 4 multiplie both sides by -2 => -2x +6y = -8
2x +Qy = 8
-2x +6y = -8
2x +Qy = 8
------------------ assume the same terms
0 6y +Qy = 0
6y +Qy = 0
Qy = -6y divide both sides by y and will get
Q = -6
