Taking the slope about different points, we have

The slopes are positive but are not equal, which means that that the association is positive non linear association.
Answer:
if xy=yz I think this is isosceles triangle so angles are the same
180-40=140
140÷2=70
this is 70
Polynomials, and Integers, I believe.
Correlation: an increase in the birth rate and a decrease in the death rate
no relationship: an increase in the urban bird population and in increase in airplane accidents
causation: a decrease in deaths related to heart disease and an increase in air travel
Parallelogram.
Opposite sides are parallel.
in a rhombus and square all sides are equal so it isn't those.
It isn't a rectangle either because in a rectangle all angles are ninety degrees