What is five times the product of x and y increased by 3xy

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Which two undefined geometric terms always describe figures with no beginning or end?