I'm learning the exact same thing so give me some question and I can see what I can do!
Reflecting over the y-axis
Answer:
Point C is in the interior of angle ABD.

Hence, on the sales of Rs. 20000, Manas will receive a commission of: Rs. 1538.46
Solve the top equation to get on variable on one side
2x-y=6
-y=-2x+6
y=2x-6
then plug in the coordinate for x and y for both equations. if both equations are true then it’s a solution
2=2(2)+6
2=10
4+2=6
so it’s not a solution