Sorry but the picture is just white for me?
Answer:
y = -2x + -3
Step-by-step explanation:
The line has a slope of -2 because when counting from point to point, its 2 down and one over; 2/1 or 2 (negative because the line is going down)
The intercept in -3 because thats the first place the line touches the y axis.
In the given quadrilateral ABCD,
(Sum of interior angles of a quadrilateral is 360 degrees)
(Substitution Property)
(Addition Property of Equality)