Find the slope and y-intercept of the line that is \green{\text{parallel}}parallelstar t color #28ae7b, start text, p, a, r, a, l, l, e, l, end text, end color #28ae7b to \blue{y = 3 x - 3}y=3x−3start color #6495ed, y, equals, 3, x, minus, 3, end color #6495ed and passes through the point \red{(-2, -7)}(−2,−7)start color #df0030, left parenthesis, minus, 2, comma, minus, 7, right parenthesis, end color #df0030.

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)