The reflection line is located at y = -x
For point J, x is -2, so y = -(-2), which equals 2.
When it is a reflection across Y, the X values remain the same.
Find the distance of the Y point to the reflection line,
The distance from -1 to 2 is 3 units.
The new point needs to be the same distance from the reflection line.
2 + 3 units = 5.
Point J' would be (-2,5)
The answer is 9. you start with 1+2 in the parenthesis and then divide 6 by 2. that gives you 3x3 which is 9
If your equation boils down to 12=12, then that means the variables you use don't even matter. Not only would this have infinitie solutions, but all solutions.
There is not enough information to answer this question.
B is the answer because it does not give information for the third side. We cannot assume it is equal because it is not a right triangle.