Consider the Four Points a = (1, 0), B =

question 28

Essay

Consider the four points A = (1, 0), B = (2, 2), C = (3, 5)and D = (4, 3)in the xy-plane.
Find a and b in the line of best fit y = ax + b for these points.
(The line of best fit minimizes the sum of the squares of the vertical distances from each point to the line.)

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Definitions:

Warning Coloration

Bright and distinctive patterns of color used by certain organisms to signal danger or unpalatability to predators.

Camouflage

Coloration or body form that helps an organism blend in with its surroundings and escape detection.

Competitive Exclusion

A principle stating that two species competing for the same resources cannot coexist permanently if their ecological niches are identical.

Character Displacement

A phenomenon where differences among similar species whose distributions overlap geographically are accentuated in regions where the species co-occur but are minimized or lost where the species' distributions do not overlap.