The total amount of angles in quadrilateral is 360.so:
z=360-(122+79+90)
z=360-291
z=69
It will reflect the same distance over the Y axis, from the right side of the graph to the left side of the graph.
1/3 is the slope, or 1 over 3.
12x-3-3x=5-(x-8)
9x-3=5-(x-8)
9x-3=5-x+ 8
9x-3=13-x
9x=16- x
10x=16
X= 8/5
