There is no constant of proportionality.
Step-by-step explanation:
So if you were to take 2 points, let's say (4,5) and (8,9). It always has to be y over x, so the fractions will be 5/4 = 9/8. There is a covariance in the denominators of times 2. It's not the same in the numerators.
Because the cos theta < 0 then theta must be an obtuse angle
so a^2 + b^2 < a^2
C
Answer:
9
4+5 is equal to 9.
