Answer:
x=58
Step-by-step explanation:
ok this is a 5 sided polygon
5 sided polygon has 540 degrees
540-90-120-108-100= the unkown angle
122
but look at the line exterior plus interior = 180 degrees
180=122+x
subtract 122 from both sides
x=58
Slope or m is -2
Y intercept or b is (0,-1) or -1
X^2 - xy + xy - Y^2
=
X^2 - Y^2