Given the points A(2; -3), B(-3; 5), C(1;p) and D(q; 4). Determine p and q such that a) A, B and C are collinear. b) AB is perpendicular to BC. C) CD is a horizontal line. Please help

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)

Twelve less than a number is at most 20